Never, ever underestimate the power of simple play. Children don't need complicated, or expensive toys all the time. Sometimes all it takes is a suggestion, an opportunity or a spark of imagination. In this case, all it took was the flag off of our bike trailer and a suggestion from me: "why don't you run races?" Off they went, running, running, running. They ran simple foot races. They chased each other. They even tried starting at the top of the slide and running once they reached the bottom. In the end, I had two exhausted girls. It was a good day!