create: categories.json, bob.stl, bob.png, items.json, nano1.png, nano2.png, uno.png, watersensor.png, items.json, nano1.stl, nano2.stl, uno.stl, watersensor.stl, gear.stl, zero.png, items.json, zero.stl, cone.png, cube.png, cylinder.png, frustum.png, hemisphere.png, hexagon.png, plane.png, pyramid.png, roof.png, round_roof.png, sphere.png, torus.png, tube.png, wedge.png, items.json, roof.stl, round_roof.stl, tube.stl, wedge.stl, items.json