Well, if we're getting crazy, I think it would be awesome to have one of those "natural" swimming pools. I know I read an article somewhere, where people had normal sunken pools, but were forgoing the traditional chlorine set up in favor of a pond-like set up, complete with koi. But they also swam in it! How fun would that be? Relaxing on an inflatable pool float, trailing your fingers in the water, while fishes nibbled at them? Maybe reading a book while sunning and dipping your feet? (Swoon.)