We just installed two Smart Faucets, one in the front head
and one on the gallery sink. I absolutely love them. You attach it directly to your normal faucet. When doing dishes, I leave the faucet open, but water
only comes out when I press on the bar, leaving my hands free to wash the dishes. It saves so much water
and I don't have to keep opening the faucet. There are lots of brands out there, we purchased ours from Smart Gadgets, no affiliation, for less then $10 each.