I wanted something to route a cable along a desk edge without damaging the cable in the long run.
Didn't find anything that suits my needs so I designed this contraption.
Maybe someone finds it useful.

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Someone on Reddit asked for an alternate mounting option.
Your wish is my command.
Print it on its side with tree supports and brim enabled.
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Use two 608 bearings and any 608 bearing guide.
I used the guide from this model: https://www.printables.com/model/179627-filament-guide-screw-mounted-608-bearing

To secure the long roller to the top use any M3 screws.

I also used this cable stop at the bottom so I don't jank the cable out of its wall plug: https://www.printables.com/model/407391-cable-stop

I printed it in the orientation shown in the pictures.
Not ideal, but works.

Here it is in action: https://youtube.com/shorts/fSgbJLltTe0

The distance between the two pins is parametric and can be changed in Fusion360.