At Seattle Barcamp held at the Adobe office, I discovered StepNPull, a clever device that solves a common problem. After you wash your hands in the bathroom, should you touch the door handle when you leave?
Instead of using your hands, you put your foot on the petal, pull forward, and open the door. Worked great. Only wrinkle is while you are figuring it out the first time, if someone opens the door in that moment they’ll hit you in the face.
The low frills version of this is smart placement of the trash.