Tao63

Oh wait, I forgot to add, no dangerous like exploding chemical reactions please, not allowed Anyways thanks for replies though

Can I ask ideas here? If not, please give me some link where I can get some ideas or something, anything that would amaze grade schoolers would do. Example Flame on water Changing a liquid's color into white makes them think its milk or violet for grape juice It's not science fair but still some kind of contest =/