I was looking around and couldn't find a good enough way to attach a lot of cables but still rearrange easily, this was the best I could come up with.
Older version on the example pictures, since then added the little tabs to help opening up the gap. I also split the rings open because why not. These are a bit trickier to pass cables through, so I recommend using the gaps first, then the rings as backup or for thinner cables.
Print laying on the side for stability, PLA works fine and the big one should fit diagonally on a Prusa Mini.
I use one of these in every end of the table to tidy things up: https://www.printables.com/model/451369-cable-hook-easy-cable-management
The author marked this model as their own original creation.