Minus the terrible stove thing, and a nicer looking fire pit, perhaps with a low wall along the out side of the patio. But like the graduated steps from the back door on to the stone. (Patio Step To Yard)
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.
Outdoor shower/water day for kids.Could easily be made with hollow box uprights, run the water tube through one and the top hollow box with a PVC tube that you drill holes in for the water to run out. Faux paint it to look like copper, really pretty easy.