J.G.
Hmm. Hard since you are supervising at the same time. I do agree with all the answers already posted. The only other thing I do when outside supervising my son while he plays is I like to do Sudoku. It's easy enough to put down and pick back up when I need to. I think calling to catch up with someone is a great idea. I often call my Grandma and chat with her while outside with my son. Oh another idea --- clip coupons and make your grocery list! Or do exercises/stretches/jumproping!