This craft program that I did turned out so awesome! I found the idea here on Pinterest and it was so easy. I knew the kids would like it, but I had no idea how much they would love it. We even used glow in the dark paint so it glowed even more. We have a kitchen in our program room that is completely dark, so they had fun going in and out looking at their fireflies glow. AND we are saving the environment by reusing plastic water bottles! Here is what mine looked like, nothing too exciting but you get the idea.
Firefly Recycled Bottle Crafton July 10, 2012