I bought a big, huge bag of dry ice for $5. I put it up in the freezer, so we could make a video experimenting with the dry ice for the next day. Low and behold, dry ice doesn't work so well when you put it in the freezer! All of it evaporated over-night, so we only had a little piece of it left to play with for our video. You learn something new every day...
https://youtu.be/wx_Y6vHtlrc
