This is an oldie but goodie. You have to be ready for a bit of a mess if your going to do this right. If indoors, set up chairs to crawl under, pillows to climb over. Somersault on soft floor. Jump over stuffed animals. Define a path that you have to follow – get involved and try the obstacle course with your child – there will definitely be a lot of laughter. If outdoors, find toys to jump over. Draw circles with chalk that you hop through. Army crawl. Crab walk. Use your imagination to make it fun, challenging and age appropriate.