Things You'll Need
Instructions
Roll a 5-inch square of aluminum foil into a tight ball.
Select a rubber band and stretch it around the ball several times until the rubber band conforms tightly to the aluminum foil ball.
Add another rubber band around the aluminum foil ball using the same process. Continue adding more rubber bands, making sure each rubber band is very tight around the ball. Eventually you will cover the aluminum foil ball and you will be making the ball larger with each rubber band that you add.
Add rubber bands until the ball is the size you desire.