Think chemical energy is dull? Think again with this cool project that lets you turn a potato into a battery. The project is perfect for ages five and up, although younger children will need adult supervision and help to work with the nails and wires.
Carefully pop off the back of a Sharpie accents highlighter using a knife. Yellow or green works best. Pull out the innards, and cut the plastic. Be careful, it's messy! Put it in half a plastic cup of water. Turn on the blackli