Armrests for automobile seats; Campers; Cargo storage bins especially adapted to fit in cars; Flexible fuel tanks for trucks; Garden hose carts; Grocery carts; Hand trucks; Luggage carriers for automobiles; Metal locking device for trailer hitch couplers; Mobile storage tanks; Non-motorized carts for transporting and storing recreational and sports equipment and sports balls; Pet strollers; Roof racks; Trailer hitches; Trolleys