Abstract: A portable table or shelf support surface formed for ready engagement to the upper portion of a stepladder or the like. The support surface has an opening formed therethrough for receiving the upper portion of the stepladder. A receiver is formed at the opening, with walls emanating from the underside at an angle commensurate with the angle of the exterior edges of the front and rear stiles forming the open stepladder, so as to directly engage and receive support from said stiles. A spreader bar is provided to engage the upper portion of the stiles or the underside of the top step of the ladder, and apply pressure via first and second threaded members to the upper portion of the surface mounted about the ladder, the threaded members having foot pads formed to apply downward pressure so as to anchor and stabilize the support surface.