There have been a influx of hook objects, so I figured I should throw my design into the mix. I recently moved into a room with wire shelves in the (smallish) closet. Wanting to maximize my storage options, I designed these hangers to hook onto the shelves. The hooks have a diameter of 30 and 50mm. The attachment point is made for 6-7mm diameter rod, but the hook could be scaled for any other size. It is a tight press-on fit, so the hook does not come of the shelf accidentally. The hook has a 5x10mm rectangular cross-section.I will try to upload photos when I get home and time allows (The move is still in progress).The three attached files each contain two hooks, the hook diameter given in the file title.I printed both sizes in ABS with a couple extra shells and light infill. This has worked for holding a bath towel or pair of jeans. I have not attempted to find the limit, but they are stronger and stiffer than I expected. For even greater strength, use zero extra shells and 100% infill.Let me know if there are any suggestions for improvement or new sizes.