Pondless Backyard Fountain Pond and Waterfall. Even without the fountain, which in Az will grow algae like nobody's business, I think the idea of softening up the patio with a little rock garden with plants mixed in.
Neat idea for an outdoor tub. I don't think I really want to bathe outdoors (living as close to my neighbors as I do), but I can see using an old tin tub as an outdoor water feature in the backyard. This is at the Magnolia Pearl Ranch in Texas.