A year ago, I started organising the cables under my desk with Multiboard and Underwear. However, some of the accessories I used at that time came loose over time, until all the cables fell. This time I decided to look for other types of adapters and found some that are not compatible with Multiboard. Now, with a bit more experience in 3D modelling, I created these cable holders with a design more similar to Multiboard:

Single Cable Holder: For smaller or thinner cables, such as USB cables

Double Cable Holder: For thicker cables, like those for the CPU or monitors, you can add more space between the adapters. This way, you can use a longer cable.
Channel Cable Holder: To run all the cables through there.

Adapter: To apply double-sided tape or Velcro to stick an object we want to hang.

I hope it helps you organise your cables better. Let me know if you have any ideas, maybe I can add more adapters to the collection.