We called it the barrel; it was basically a hamster wheel for human children. Five feet in diameter and constructed of wood, it was already gray and weathered by the time we got it. During recess, most of us would ignore the swings and monkey bars and head right to the barrel. About five of us could fit inside at once. The rest of us would stand on the outside and use our hands to speed the barrel up. Those of us inside had to be fast runners. If we weren’t, the price we paid was bruised knees and splinters in the fleshy parts of our palms. If one of us fell, the rest would soon go tumbling, too, those of us inside yelling for the others to stop pushing.