I found some at the $store. They were big and clunky and my son broke it watching the Canada day parade. I found "good" ones at Walmart last weekend marked down to 3$ but they're a lot better quality and much smaller. I found them in the toy department.
I found one in the Save-on-Foods grocery store. We had actually bought one while we were at Animal Kingdom in May 2000 and it was soooo hot. The mister fan worked so well. Now my daughter uses it when she suntans in the backyard.