Here's something I just found here -

Make Homemade Ice Cream. Believe it or not, but you can make ice cream in a plastic bag!

It's easy: Here is what you will need:
- 2 tablespoons sugar
- 1 cup half and half
- 1/2 teaspoon vanilla extract
- 1/2 cup salt (The bigger the granules, the better. Kosher or rock salt works best, but table salt is fine.)
- Ice cubes (enough to fill each gallon-size bag about half full)
- 1 pint-size ziplock bag
- 1 gallon-size ziplock bag

1. Combine the sugar, half and half, and vanilla extract in the pint-size bag and seal it tightly.
2. Place the salt and ice in the gallon-size bag, then place the sealed smaller bag inside as well. Seal the larger bag.
   
3. Now shake the bags until the mixture hardens (about 5 minutes). Feel the small bag to determine when it's done.
4. Take the smaller bag out of the larger one, add mix-ins, and eat the ice cream right out of the bag. Easy cleanup too! Serves 1.

I didn't know this!! WOW! Guess what we're going to be doing soon! I'll post pics =)