Science Lab Decorating Help wanted?

Question:This year I am helping with a Bible School and the theme is Mad Science Lab, I need some ideas how I can decorate the room. We already have glass jars filled with dyed water and plastic spiders and stuff. What else can we do?

Answers:
Hang up some white lab coats. Get some dry ice, so you have smoke coming out of the bottles. Get some test tubes full of colored water.