I found a secret way to make a sweat pop gun out of just a chapstick tube. Tools:All you need is a regular chapstick or anything close to it should work (tip : chapstick brand work best), and something to pull off the bottom screw piece. You then take out the actual product from the tubing and throw that away, then pull the screw piece back all the way. Put the cap back on and hit the back end with your hand, and the cap will go flying off. I have had plenty of fun with this little chapstick " mod ". Have fun! To find out how to make more cool gadgets, get on your computer and go to metacafe.com and search "how to".
Fun with blacklight and highlighter glow water.