A cable guide to stick in between 2 desks, uses velcro to hang the cables from it.
Uploaded a few variations as well depending on what you are looking for.
The Assymetric velcro works best here, it stays attached to 1 of the desks whilst sliding the other way for routing wires. Also made a single desk clip but have not tried that variant yet.
The orange translucent PLA from colorfab was sturdy enough to hold quite a clutter of cables. I printed it at 205C at 0.3LH for strength.