A Saniswift gray-water pump makes it easier to add plumbing fixtures to rooms with no below-floor drainage. The size of a small wastebasket, it can pump up to 24 gpm (depending on discharge-line length) from three fixtures and handle a rise of 14 feet. An internal pressure switch automatically turns the pump on and off. Cost: $265. Saniflo, 800.571.8191, saniflo.com