I've seen these sub hooks being sold that fit over a coat hangar to allow accessories or even another coat hangar to be dangled from. A simple idea that can be easily reproduced with a 3D printer and at a low cost.
Here is my design that duplicates the functionality of the hooks. The choice of 3D filament type is open.
My print is made with eSUN PLA+ 1.75mm Orange filament, with 0.2mm layer height and 15% infill on a Bambu X1 Carbon printer. No supports required. No printing rafts required, but support for the hole will improve the print finish.
I hope that you can find this print useful, too.
Remember to leave me some feedback or even a tip to keep me enthused to make more of these drawings.
For my latest models, see my main uploads site: https://makerworld.com/en/u/3687936443