Has anyone tried this?
How to Make Ice Cream in a Coffee Can
1/2 cup sugar
1 1/2 tsp vanilla
3 tbs chocolate syrup
About 1/2 cup Rock Salt
Place the ice cream mixture in the smaller coffee can and seal lid with duct tape. Place the smaller can in the center of the larger can. Pour the ice and salt around the smaller can.
Put the lid on the larger can and place a piece of duct tape around the lid to make sure it is really secure. Roll the can around outside for about 30 minutes.
Again it was so hot that we had to refill the ice and salt in the can about half way through! Our kids weren't too crazy, so we did just fine leaving the duct tape off after we refilled the ice. Rinse smaller can before serving.
Everyone agreed the chocolate ice cream was our favorite.