Abstract: A stackable storage tray that can be combined with an identical stackable storage tray to form an enclosed box. The stackable storage tray comprises a flat base, a rear wall, two side walls, and an open front. Each of the two side walls are complementary with the respective side walls of a second identical stackable storage tray, so that when one storage tray is flipped upside down the two trays form an enclosed box—the open front of the stationary tray receives the complementary rear wall of the flipped tray, the rear wall of the stationary tray fits in the complementary open front of the flipped tray, and the sides have side walls and open spaces that are complementary reverse mirror images of each other and fit together to form an enclosed box.