For about a buck you can entertain a 3.5 year old for over an hour. LOL
I saw a few people had tried this and thought it would be something the Princess would enjoy. Well I was right. She had a blast. It was a lot of laughs for both of us. I recommend you try it with your kids. It really was a cheap thing to do and it rates high on the list for fun!
Playing in the mud always rates the highest, but at least with shaving cream they smell nice and clean afterwards. (-: