Abstract: A marker post and the like comprises a base to be placed on or in the ground. A threaded hole or other fastening mechanism is located at the top of the base. A post is attached to the base by a spring. At the other end of the spring is a screw or other fastening mechanism which will operate with the fastening mechanism at the top of the base. When impacted by an external force, the marker post flexes.

Abstract: A collapsible truck bed covering structure includes left and right base members fastened to the top of left and right sidewalls, respectively, of the truck bed. Left and right sidewalls are hinged at the bottom to the left and right base members, respectively. Trolleys at the top of the left and right sidewalls are couple to the rails in a top member so that raising and lowering the top member, raises and lowers the sidewalls. Rear and front window frames are hinged at the bottom with a pin and inverted J-slot hinges between horizontal retracted and vertical extended positions and releasably locked by post and keyway structure.