So couple of years ago I got fed up with various ethernet cables around the house and decided to do something about. I already had few bits and pieces of cable trays I had purchased from hardware store, but since the only option for corners is cutting them with miter saw, I decided to print my own special pieces.
In the end I ended doing quite a few meters with printed parts, even the straight parts which would be easier with parts from hw store. But I was just having too much fun… :).
There is a cable clip part also for tying the cables.
No supports required, parts that need supports have them modeled in.
PLA or PETG. PLA has worked fine for a couple of years.
OpeSCAD source here: https://github.com/spegelius/3DModels/blob/master/Cables/cable_tray.scad
The author marked this model as their own original creation.