I do the same thing with packing "peanuts" the biodegrable ones that look
like white puffy cheetos. If you dampen the ends with a wet sponge they stick
together. Dampen the sides to create double or extra width. Last year instead of
carnival rides one class even made wearable hats. I ask the parents to save
them from Christmas packages and send them to school in January during our
school's Festival. To test the "peanuts" to see if they are the right ones, hold
them under a faucet. If they dissolve, they work for this project.