A radio that doesn't need a battery or plug? In the "Build Your Own Crystal Radio" electricity and project students build a working crystal radio and investigate how to improve it. A convenient project kit is available to do this science project!
How to make Skeleton Leaves with Washing Soda. Washing Soda is made by baking regular Baking Soda in a oven for 30 minutes -- (Who knew?) - Don't care so much about the leaves, but pinning for the washing soda tip!