I liked the model made by adgaudio (https://www.thingiverse.com/thing:49210) but I don't like using OpenSCAD. So I modelled it up in Onshape and made it so it's easy to make custom hooks by changing a few variables.

Things you can do

• Individually adjust the radius of each loop
• Individually adjust the angle the tips stick out at
• Individually adjust the length of each tip
• Adjust the length of the central straight rod
• Adjust the height of the model
• Adjust the thickness of the model (which doesn't change the radius of the loops)

Directions To customise the hook all you have to do is:

• Make an Onshape account for free if you haven't already
• Click on the link below
• Click the blue "Make a copy to edit" button
• Change the variables to customise the hook
• Select Part 1 in the parts tab and then right-click the highlighted part and click export
• Choose STL for the format, millimetres for the units, fine for the resolution and download for the options.
• Click the "OK" button and save it in your downloads folder.

Notes

• If you measure the diameter of the rod you plan on hanging the hook on with callipers halve the value and that's the radius you use
• If you used a measuring tape to find the circumference of the rod you plan on hanging the hook on, divide that value by 2pi and that's the radius you use
• It's always a good idea to add a few mm to the radius you measured that way it's not a tight fit
• You probably want 100% infill for strength

Link to the Onshape document: https://bit.ly/3ohpr2o

If you have any questions please comment and if enough people have similar questions or issues I might make a video running through it.