I present you, this very strong and stable towel hook. No need for sticky tape or screws. It just slides on you (kitchen) door and stays there. The wider top design ensures the hook doesn't tilt or misalign everytime you hang or grab your towel. The back is at a slight angle so the hook clamps the door.

I printed this in PETG for extra strength, but can just as easliy be used in PLA. Can be used on doors with a max width of 16,5mm and minimum thickness of 15mm. You could scale the model up or down to make sure it fits you desired door thickness. Feel free to ask me to design a specifick thickness as wel!

UPDATE

Added a 35mm version upon request. See extra print profile.

If you have any feedback, please let me know.

Happy printing!