You'll need:

2 empty coffee cans
1 1/2 c. rock salt (I used the salt from the water softener)
20 c. crushed ice

(1 pound can with plastic lid and 3 pound can with plastic lid).

In small can mix:

1 c. heavy cream
1 c. milk
1 beaten egg
1/2 c. sugar
1 tsp. vanilla
You can also add chocolate, strawberries or peaches

Cover small can and set in center of larger can. Layer 1/2 the crushed ice alternately with 1/2 the salt in the space between the cans. Cover the larger can. Now the fun begins! Choose a hard level surface and ROLL the can back and forth between the kids for 10 minutes. Open outer can - empty old ice and salt. Lift small can, wipe lid dry and open. Scrape ice cream from sides and stir. Cover again and replace in large can with new ice and salt. Cover and roll 5 more minutes. Makes 2 1/2 cups of ice cream. It was delicious!!