Made homemade ice cream according to this recipe. Well, close anyway:

Get a plastic bag, fill it with ice

Add 6 tablespoons of rock salt. I didn't have this, so I used regular salt.

Get a ziploc type baggie, fill it with:

1 tablespoon of sugar

1/2 cup of milk. I used 2%, and added some creamer to get the fat up a bit

1/4 teaspoon of vanilla

Put the little bag in the big bag, and shake for about 5 minutes. It took me about 10 minutes, and I had to add extra salt to get the mixture to freeze. Still not sure why this works, but it seemed to help. That and a lot more shaking.

Put the big bag in a waterproof container when it starts leaking.

It didn't taste too bad...sort of like crystalized vanilla ice cream. It was a hot day, though, and it was good enough to try again in the future. At least, a good waste of an hour! It always tastes better when homemade. No matter how awful it tastes.