Kids are going to play ball so why not get some rewards from it? Filled with the proper ingredients, this thermo-sealed churns delicious ice cream as it’s rolled back and forth. The cooled chamber spins, rolls, and cranks out your favorite flavors as your kids give it (and themselves) a workout. The ball itself is about nine inches in diameter, and can produce one pint of ice cream after 25 minutes of moderate play. It’s the “hard work pays off” lesson kids need this summer.