Image courtesy of David Castillo Dominici at FreeDigitalPhotos.net

A University of Washington team created a toilet with a 3D printer.  The toilet are made from waste plastic and can be used for composting.  The lack of toilets is a huge issue in the developing world where it is estimated 2.5 billion people do not have adequate sanitation.  This has been a huge point of emphasis of the Gates Foundation.  This is a win-win, a use of waste to help handle a waste problem!