Hehe, I was actually thinking about this as well, but I dropped it in favor of other ideas. However I was thinking you could use urinals as flower pots on the walls, if the walls was marble and just have the urinal coming out of it, as a flower pot.
@dustkhan, definitely putting in some air fresheners. @McGreed, the Urinal Flower Pots sounds amazing haha, I'm going for it. @monkeymintaka good luck, can't wait to see what it looks like.