We've tried that. Unfortunately, we don't have money to just go by things like that. All of our money is tied up, with maybe 5 dollars to spare. Since I got some bulk pinkies we might buy dry ice, we had a tiny little piece in the box and it cooled the living room down pretty quickly. Once I start getting some money in May or June I'll probably invest in some dry ice for my room. Till then, the ice water is free.