Instant Off Water Saver

I installed these Instant Off Water Saver things on both faucets to save on gray water (not to mention, just to be a little more green).  They work great!  You just push the little stick when you want water flow and release when you don't, or for dishwashing you can twist it so it stays on without pushing against it.  Home Depot is about half the price of what you find online.