OXO Good Grips Tub Stopper
The OXO Good Grips Tub Stopper forms a water-tight seal over the drain for filling a bathtub with water.  Constructed of stainless steel and silicone, it features suction cup that secures the Stopper to the tub floor.  When the Stopper is not in use, the suction cup conveniently stores the Stopper on the wall.