I used to work for an airline in the food department that actually put food on flights(gourmet food originally) and we used dry ice. Be very careful with dry ice! My fingers were frost bit so many times because I was too stupid to use gloves I now feel the effects every winter. Also the fun is dangerous. If we did now the stuff we did then, I'd be in jail. We had too much fun with dry ice. We blew up stuff all the time as practical jokes, or put it in urinals so when people peed on it they would be enveloped in a cloud. Ahh when life was simpler and more fun. lol
