Abstract: A model, portable stage assembly capable of being disassembled and operatively assembled so as to predetermine the design of an intended set including the arrangement of various model furniture or other scaled down set elements. The assembly comprises a stage means including a relatively soft, penetrable surface on which a plurality of set elements can be positioned and rearranged by contact means in the form of pins or the like serving to penetrate the surface and thereby be fixedly positioned in a determined area. Housing wall elements, backdrop elements including side curtains and a facing are all movably connected to the stage base and floorings in an adjustable predetermined relation to one another so as to allow the arrangement or predetermination of a set design on a scaled down basis.