I had taken the boys to a place that made ice cream with liquid nitrogen right in front of you. When they first opened they were selling balls that made you "breath like a dragon" but had stopped due to health concerns before we got a chance to go. Well we discovered the mall was selling something similar so we gave it a try. It wasn't an ice cream ball but they were hard "foam" like balls that when you put in your mouth and breathed out, it became smoke. The boys didn't like the flavorless balls but were champs at giving it a go.
