Turn kitchen leftovers into compost and simple recycled crafts, sort materials, learn decomposition, and make seed starters or art from reuse.



Step-by-step guide to recycle kitchen leftovers into compost and simple recycled crafts
Step 1
Gather all the materials from the list and set them on a table so you can reach everything easily.
Step 2
Sort your kitchen leftovers into three piles labeled Compostable Recyclable and Trash and make sure no meat or dairy go into the compostable pile.
Step 3
Tear the cardboard or shredded paper into small pieces to make brown material for the compost jar.
Step 4
Cut or chop green scraps like fruit peels and vegetable bits into small pieces with adult help so they break down faster.
Step 5
Put a layer of potting soil about two fingers deep into the bottom of the clear jar using your spoon or trowel.
Step 6
Add a thin layer of the torn cardboard pieces on top of the soil to make the brown layer.
Step 7
Add a thin layer of the chopped green scraps on top of the cardboard layer.
Step 8
Spray or sprinkle a little water so the layers are damp but not soggy.
Step 9
Cover the jar loosely with its lid or a breathable cloth so air can get in while keeping bugs out.
Step 10
Place the jar on a tray in a warm bright spot and check it once a week to watch and smell how it changes.
Step 11
Cut the egg carton into single cups with scissors using adult help so you have little planters.
Step 12
Fill each egg carton cup with potting soil using your spoon or trowel.
Step 13
Press one or two seeds into the soil in each cup so the seeds are touching the soil.
Step 14
Water each cup lightly so the soil feels just moist and then decorate the cups with colouring materials or twine.
Step 15
Share your finished compost jar and seed starters on DIY.org.
Final steps
You're almost there! Complete all the steps, bring your creation to life, post it, and conquer the challenge!


Help!?
What can we use instead of a clear jar or potting soil if those are hard to find?
If you don't have a clear jar, use a clean clear plastic bottle or transparent food container so you can still watch the compost layers form, and if you lack potting soil mix garden soil with a little sand and shredded paper to fill the jar and egg-carton cups.
What should we do if the compost jar gets soggy, smells bad, or mold appears?
If the jar becomes soggy or smelly, remove the lid, add more torn cardboard or shredded paper as dry brown layers, gently mix with the spoon to aerate, and reduce how much water you spray so the layers stay damp but not soggy.
How can we adapt the steps for younger children or older kids who want more challenge?
For preschoolers have them sort leftovers into the three labeled piles and press seeds into the egg-carton cups while an adult chops scraps and uses scissors, and for older kids let them chop scraps with supervision, layer the jar themselves, and keep a weekly observation log of changes.
How can we enhance or personalize the compost jar and seed starters once they're set up?
Decorate and label each egg-carton cup with seed names and dates, try different seeds to compare sprouting, and when seedlings have roots transplant them into larger pots while continuing to add safe kitchen scraps to the compost jar to watch it mature.
Watch videos on how to turn kitchen leftovers into compost and recycled crafts
Facts about composting and recycling for kids
♻️ Upcycling means turning 'trash' into useful or beautiful items — things like jars, egg cartons, and toilet-paper rolls become planters or art tools.
🌍 Adding compost to soil improves water retention and soil life, and helps store carbon in the ground — a small action that helps the planet.
🍌 Compostable kitchen scraps (fruit and veggie peels, eggshells) can make up about 30% of a household's trash — and composting keeps them out of the landfill!
🐛 In a vermicompost bin, red worms can eat roughly half their body weight in food scraps each day — they turn waste into rich worm castings.
🌱 Seed starters made from recycled paper, eggshells, or cardboard tubes can often be planted right into the garden because they break down in soil.


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