Reuse your old biodegradable packing peanuts and make a craft! You can tell they are biodegradable because the texture will be somewhat “cheeto” like and if you put water on 2 pieces they will stick together.
Make a fun pattern out of your packing peanuts and then dab a little water on the pieces you want to stick together. Hold for a few seconds while they dry.
You won’t be able to paint them because any liquid will cause them to melt.
Have fun finding out what you can make.