Science project: 2 clear containers, water, shaving cream, food coloring, and droppers. Slowly pour the food coloring on top of the shaving cream clouds and watch the "rain" come down when the clouds get saturated.
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