Here is something that people have been thinking about for a long time, but Sink Positive has come up with the solution to actually do it. The sink can be mounted on any toilet tank, and you use it to wash your hands just as you would a “regular” sink. The water then goes into your toilet tank and you use it to flush. Brilliant. The New York Times has called it one of the “5 Must Do’s for a Green Home”.

Sink Positive is available for purchase online at their website and through other major retailers across the US and abroad.