I realize quite a lot of you are parents, and I wouldn't blame you for keeping the smaller ones away from my ECPM lessons. However, if you want to vicariously get your kids involved in music this might be a good place to start.
Play Piano for Kids Vol. 1 is a $0.99 iPad interactive eBook designed by a Piano teacher, Andrew Ingkavet. Here's a video of him talking about how the program works.
You can find our more information on his website. It looks like everything, including membership is free!