an hour of entertainment

During our last Mama-and-Son night, my son was busy for over an hour with this activity. We started by hammering golf tees into this piece of Styrofoam. Then I got out some rubber bands. It started out as an art project / musical instrument, but, as you can imagine, turned into a rubber band shooting machine after a while. Luckily, it didn't hurt at all. Sometimes as he was preparing to shoot me, I'd accidentally lose my hold on the Styrofoam block, and it would go flying. He laughed so hard!