Almost every temple I have been to has had an area devoted as a sanctuary for otherwise-homeless statues: figures that were purchased for home use but are no longer needed.  Another lesson in impermanence...Mother passes on, but we can't just throw out the object of years of veneration from her home shrine.  Whether it's a room inside a Main Gate, a covered area behind a hall, or just an old household-type shrine left on the street outside the walls, these "discarded deities" sometimes become objects of veneration themselves--as they should be.