I have never really had a chance to play with dry ice. This looks like a fun and easy experiment. Plus if it's time to get a new microwave anyway, why not give this a whirl. It's not as dangerous as you might thing, it is pretty much like putting water in the microwave. But you never know what is going to happen when something enters the strange world of the microwave. I would tell you what happens, but I didn't want to ruin the surprise! Where can you even get dry ice around here? Anyone know?