No TPU required, can be printed form hard filaments like PLA or PET.

Thinner cables can be placed by two in single slot.

Usually cables are quite long, specially when they dangling in side of your desk, I was searching for proper cable holder that will help me organize those but didn't find any that is why i designed my own. I prepared few length version but you can easy make your own, just simply take single cable version few times place them on build plate side by side in your slicer select all and merge.