Today we decided to try out one of the new water activities I had heard about it on this website. I am ALWAYS looking for activities that are (1) cheap (2) easy (3) fun! This one definitely fit the bill. We simply wrapped a double layer of tinfoil to form a river, set some water going onto it from the top (we used a slide), and then found cool toys to fly down the river. We had a blast. And since we were using our well water, we didn't feel very wasteful. We will leave this tinfoil set up as long as we can in order to get the maximum use out of this activity.