Earth Day Crafts for Schools: Compostable Materials Only

Earth Day in elementary and middle schools generates a tremendous volume of well-intentioned arts and crafts. Posters about saving the planet drawn on glittery cardboard, “trees” made from polyester ribbon and foam, plastic bottle dioramas demonstrating ocean pollution, recycling-themed projects ironically built from non-recyclable materials. The pattern is so common it’s become a punchline among environmental educators: Earth Day projects often produce more landfill waste than they prevent.

The fix is straightforward: build the craft activities using only materials that actually compost or that come from the kind of waste streams the day is trying to address. The kids learn the same lessons. The teachers don’t have to do dramatically more work. And the projects themselves model the principle they’re teaching, instead of contradicting it.

This article covers a set of compostable-only Earth Day craft activities suitable for elementary and middle school classrooms — supply lists, instructions, and how to frame the activity so the materials choice itself becomes part of the lesson.

Why this matters more than it might seem

Children pattern-match the world around them. When an Earth Day classroom activity uses glitter (microplastic), polyester ribbon, plastic googly eyes, and synthetic glue — and then the teacher says “we need to take care of our planet” — the kids absorb the contradiction even when they can’t articulate it. The activity teaches that environmental messaging is performative — what we say matters more than what we do.

When the activity uses materials that genuinely compost, the consistency teaches the opposite lesson — that environmental practice is something you can actually do, with everyday objects, in ways that match the words. This is a meaningful pedagogical difference even when the kids don’t notice it consciously.

The materials choice doesn’t make the day harder for teachers. It usually makes it easier — fewer different materials to source, fewer cleanup steps (compostable scraps go in one bin), fewer “what do I do with this finished project after a week?” questions.

The compostable craft supply kit

A reasonable Earth Day supply kit using only compostable materials:

Paper:
– Recycled construction paper (newsprint or unbleached). Brand: Mohawk, Astrobrights eco line
– Brown kraft paper rolls (for poster-sized projects)
– White printer paper (for fine work)
– Tissue paper in multiple colors

All paper composts in 2-6 months in active piles.

Cardboard:
– Corrugated cardboard from shipping boxes (free)
– Cereal boxes (recycled paperboard, lighter weight)
– Egg cartons (paper-pulp variety, not foam)

Adhesives:
– Wheat paste (homemade flour-and-water glue) — fully compostable
– Natural starch glue (for sale at art supply stores) — compostable
– Water-soluble paper tape — compostable
– Avoid: white school glue (PVA, doesn’t compost), hot glue (EVA, doesn’t compost), glue sticks (synthetic polymers)

Decorations:
– Dried leaves, pressed flowers, dried grasses (collected outdoors)
– Pinecones, acorns, sweet gum balls (foraged)
– Cotton string, jute twine, hemp rope (natural fiber)
– Small wooden beads (untreated wood, ideally with natural finish)
– Coffee grounds (for texture in collage work)

Coloring tools:
– Beeswax crayons (Stockmar, Honeysticks) — compostable wax
– Pencil colored pencils (untreated wood, natural pigment) — composts (slowly, the lead doesn’t but the wood does)
– Watercolors with natural pigments — compost-friendly when dried
– Avoid: markers (plastic barrels, synthetic ink), permanent markers (synthetic solvents)

Avoid entirely:
– Glitter (always microplastic)
– Pipe cleaners (wire core)
– Foam shapes (polystyrene)
– Plastic googly eyes
– Sequins (microplastic)
– Synthetic ribbon
– Stickers (often plastic)
– Pom-poms (acrylic fiber)
– Standard crayons (paraffin wax + plastic packaging)

The total kit cost for a classroom of 25 students: $25-50, with most materials reusable for additional projects through the year.

Project 1: Seed paper bookmarks

Materials: Scrap paper (newspaper or construction paper), water, dried wildflower or vegetable seeds, blender or hand-tearing.

Process (45 minutes):
1. Tear scrap paper into small pieces, soak in water for 20 minutes
2. Drain and pulp the wet paper (blender if available, or hand-mash)
3. Mix in 1-2 teaspoons of seeds per cup of pulp
4. Spread the pulp into rectangle shapes on a screen or kitchen towel
5. Press flat with another towel, removing excess water
6. Air dry overnight

The result is a piece of homemade paper with embedded seeds. Cut into bookmark shapes once dry. Recipients can use the bookmark, then plant it in soil — the paper biodegrades and the seeds germinate.

Lesson framing: “This bookmark composts in soil and grows flowers. Nothing about it ends up in the trash.”

This is one of the highest-impact Earth Day projects because the disposal pathway is itself the celebration — planting the bookmark is the closing activity that demonstrates compostability tangibly.

Project 2: Dried leaf collages

Materials: Collection of pressed dried leaves (gathered in autumn or pressed days in advance), cardstock paper, wheat paste glue, natural twine for hanging.

Process (30-45 minutes):
1. Each student selects 5-10 dried leaves from the collection
2. Arrange leaves on cardstock in a pleasing pattern
3. Brush wheat paste under each leaf, press to paper
4. Let dry 1 hour
5. Optional: punch a hole and add twine for hanging

The result is a leaf collage that can be displayed for weeks, then composted entirely when the display window ends.

Lesson framing: “Every part of this collage was once part of a tree. When we’re done displaying it, the whole thing goes back to the soil.”

Variant: pressed wildflowers instead of leaves. Same compostable disposal pathway.

Project 3: Egg carton seed starter pots

Materials: Empty paper-pulp egg cartons (collect for several weeks before the activity), potting soil, fast-germinating seeds (radish, lettuce, beans), water sprayer.

Process (30 minutes):
1. Cut egg carton into individual cup sections
2. Each student takes 3-6 sections, fills with potting soil
3. Plant 1-2 seeds per section per planting instructions
4. Water gently with sprayer

Take home: students take their seedling pots home to grow. When ready to transplant, the entire egg carton cup can go directly into the ground — it will biodegrade as the seedling grows. The seedling never has to be removed from the cup.

Lesson framing: “This egg carton was already used once for eggs. Now it’s helping a plant grow. When the plant is bigger, the carton will break down into soil.”

This connects composting to a productive next step — growing food, flowers, or trees — that some kids will continue at home.

Project 4: Recycled paper journals

Materials: Stack of one-side-printed scrap paper from school office, cardboard for covers (cereal box weight), natural twine or hemp string, hole punch.

Process (45 minutes):
1. Each student receives 15-20 sheets of scrap paper, cut to journal size
2. Cut a cardboard cover slightly larger than the paper
3. Decorate the cover with beeswax crayons or watercolors (no glitter, no plastic stickers)
4. Stack paper between two cardboard covers, punch 3 holes through the stack along one edge
5. Tie together with twine

The result is a personal journal made from materials that would otherwise have been recycled or trashed. When the journal is eventually retired, the entire object composts.

Lesson framing: “All this paper was going to be thrown away. Now it’s a notebook that you can use for the whole year.”

This project is particularly good because it produces something the student will use, not just admire — extending the practical demonstration of “second life for materials” into ongoing use.

Project 5: Compost bin decoration / classroom compost setup

Materials: Cardboard box (compost bin frame), brown kraft paper for covering, beeswax crayons or natural-pigment paint for decoration, classroom compost system (already in place or being established).

Process (60 minutes):
1. Discussion: what is composting, what goes in, what doesn’t
2. Cover a cardboard box with kraft paper
3. Each student decorates a section of the bin with imagery related to composting (worms, soil, plants, food scraps)
4. Place the bin in the classroom for ongoing use during the year
5. Establish the rules together (what goes in: fruit scraps from snacks, paper towels, etc.; what doesn’t: plastic, gum)

This isn’t a take-home project — it’s a permanent classroom installation that the day’s activity launches. The compost bin then becomes part of daily classroom routine.

Lesson framing: “We made our own compost bin. From now on, instead of throwing food scraps in the trash, we’ll feed them to the bin. By the end of the year, we’ll have soil to plant something.”

This is the highest-leverage Earth Day project because it converts a one-day activity into a year-long practice.

Project 6: Worm bin observation jar

Materials: Glass jar (mason jar or similar), soil, sand, dead leaves, live earthworms (from outdoors or pet store), paper to cover the jar.

Process (45 minutes):
1. Layer soil and sand alternately in the jar (about 4-5 layers)
2. Add dead leaves on top
3. Add 3-5 earthworms
4. Wrap the jar in paper to keep dark (worms prefer darkness)
5. Observe over the next 1-2 weeks — the worms will mix the soil and sand layers

After 2 weeks, return the worms to the school garden or local soil. The contents (mixed soil) can go into the school garden or any houseplant.

Lesson framing: “Worms are nature’s composters. They turn dead leaves into soil. Every garden has worms doing this work.”

The follow-up observation phase (kids checking the jar each day) keeps the lesson relevant beyond the single Earth Day activity.

Project 7: Compostable Earth Day banner

Materials: Brown kraft paper roll, beeswax crayons or natural watercolors, wheat paste, natural twine.

Process (full class period, 60-90 minutes):
1. Roll out 6-10 feet of kraft paper on the floor
2. Each student paints a section with Earth Day imagery (planet, animals, plants, recycling symbol — using natural pigments only)
3. When dry, hang the banner across the classroom or hallway with twine
4. After the display period (1-2 weeks), the banner composts entirely

Lesson framing: “Our banner is bigger than any one of us, but it’s all things that go back to the earth. After we’re done celebrating, the banner doesn’t become trash.”

This project also doubles as a school-wide visibility piece for Earth Day if hung in a hallway or common space.

Closing the activity loop

The disposal phase is part of the lesson. After the day’s projects:

Take-home projects: Send home with a one-line note explaining the compostability (“This bookmark can be planted; this collage will compost in your backyard”).

Classroom-display projects: Display for 1-2 weeks, then composted ceremonially as a class — the kids participate in disassembling the banner or collage and adding it to the classroom compost bin.

Worm jar: Return worms to soil after observation period, return contents to garden.

Egg carton planters: Sent home with planting instructions; teachers can follow up with students who report back on their seedling progress.

The disposal step matters because it makes the lesson concrete. The kids see what “compostable” actually means, not just hear about it. This is a different teaching event than the projects themselves.

Common pitfalls

A few mistakes that compromise the compostable-only intent:

Sneaky synthetic materials: “Eco-friendly” markers that turn out to have plastic barrels. Watercolor sets that include plastic palettes. Construction paper with plastic-coated finishes. Verify materials before the activity.

Leftover non-compostable supplies in the classroom: Glitter from prior projects that gets sprinkled “just to make it pop.” Stickers in the supply cabinet. Ribbon scraps. Either remove these before Earth Day or be explicit that they’re not for use today.

Glue-station contamination: A glue stick at the supply table will get used by kids who don’t know the difference. Either remove all non-compostable glue from the room for the day or supervise the supply table closely.

Take-home contamination: Kids who add non-compostable materials at home. Address through the take-home note: “If you decorate this further, please use natural materials so it stays compostable.”

These aren’t catastrophic if they happen. The lesson remains intact even if a few stickers slip through. Better to do an imperfect compostable-only Earth Day than to give up and use plastic glitter.

Connecting to broader compostable practices

The classroom compost bin established during Earth Day becomes a year-round practice. Lunchroom programs that use compostable food containers, tableware, and utensils extend the principle to daily school operations. The lessons reinforce each other.

For schools seriously committing to compostable practices, an Earth Day program that establishes the classroom bin and a year-round lunch program that uses compostable disposables together represent a genuine, measurable shift in the school’s waste profile. The curriculum can refer back to these practices throughout the year — math lessons about counting compost weight, science lessons about decomposition, social studies about waste management — making the compostable practice an ongoing teaching resource rather than a one-day event.

A reasonable summary

Earth Day craft activities that use only compostable materials — paper, cardboard, wheat paste, beeswax crayons, foraged natural items, natural fiber strings — are achievable, affordable, and pedagogically more effective than activities that use plastic glitter and synthetic supplies. The kids learn the same craft skills, the projects look just as good (often better — the natural materials have authentic visual appeal), and the disposal pathway models the principle the day is teaching.

For teachers planning Earth Day activities, replacing the standard supply kit (with its inevitable glitter and plastic) with the compostable-only kit is a low-effort change that makes the day’s message consistent with its means. The kids absorb the consistency even when they can’t articulate it, and the classroom compost bin established during the day becomes a year-round practice that reinforces the lesson well beyond April 22.

For B2B sourcing, see our compostable supplies catalog or compostable bags catalog.

Verifying claims at the SKU level: ask suppliers for a current Biodegradable Products Institute (BPI) certificate or an OK Compost mark from TÜV Austria, and check that retail-facing copy meets the FTC Green Guides qualifier requirement on environmental claims.