I made what's called a spring pole for the dogs to tug on in the yard. It consists of a garage door spring, rope, and some carabiners. They love it, and it gives them a good way to burn energy. We also put the harnesses on Eko and Dottie today and they took turns pulling Libby on the skateboard while I led with the leash. It was lots of fun, but hard to capture with a camera. I'll have to rig something with the iPhone for next time.