If you can get rock salt you can make ice cream with your whipping cream in plastic bags.
http://www.talewins.com/crafts/icecream.htm Making Ice Cream in Plastic Bags
Use splenda as your sweetener and you can put away frozen treats. We always made ice cream with the cow cream when we had cows, and it is incredible. You could sit and put a towel in front of you and toss this around while watching TV.