I figured since we have a bunch of lunatics here someone might be able to help me. here's the deal... I need to make smoke. Simple, right? Not so much. If possible, I would really like to make it with two, non-toxic chemicals or products I can just mix together in an open, metal box that's about 6x2x2 inches in diameter. I'd like to avoid using an open flame if at all possible. Thanks for any help you guys can give me!