kits consisting primarily of laboratory equipment and supplies, namely, flasks, beakers, test tubes, stirring rods, dissecting tools, thermometers, funnels, rubber and plastic tubes for scientific purposes, directional compasses, protractors, magnets, magnifying lens, prisms for scientific purposes, concave and convex mirrors, micrometers, batteries, circuit testers, voltmeters, light-emitting diodes, photosensitive and heat-sensitive paper, battery-operated toys, wind-up toys, and liquids an...