Tammy at Seven Generations in Bandon Oregon came up with this one and I had to share. IT DOES NOT USE WATER FROM THE TOILET BOWL! lol. It uses the clean water from the pipe that fills the flush tank. You can wash your hands with it and it drains into the tank to be used for the next flush. If you can find a commercial one in the states it will run at least $100. This was a couple bucks in hardware and some junk laying around.