Whether you like it or not, you’ve got to give this one an “A” for ingenuity in water conservation. It’s a sink that replaces your toilet lid. When the toilet is flushed, clean water from the toilet tank is routed up through the toilet lid sink for hand washing. Then the water is stored in the toilet bowl awaiting the next flush. So, the water is actually used twice.

Although this is not a replacement for your traditional bathroom sink, I think the toilet lid sink is a creative addition to any green bathroom, and a great idea for saving water at home. The sink is made of plastic, it requires no tools for installation, and it has a built-in soap dish. The sink fixture is made of chrome. On a personal note-I’d really like to see this as a stainless steel sink. I found the toilet lid sink at Real Goods for $89.