This is a fantastic idea. Ecovative Design has developed a way to grow and mold mushrooms to act as a substitute for styrofoam packaging. It protects items just the same as styrofoam with the added benefit of the mushrooms being biodegradable, organic, and compostable. You can of course use them again for packaging other things, but if you don’t need them anymore, you can use them for so much more than just simply throwing them out like you would styrofoam.