I used the 2020 frame clip-on of the “2020 Extrusion Webcam Mount [No Hardware] Logitech C270” found on thingiverse (https://www.thingiverse.com/thing:4636337) and the cable tree holder of the “Ender 5 / Ender 5 Plus Print Head Cable Strain Relief Support”.

I added an additional tie-wrap hole. If you print it sideways it can be printed without supports.

The clip-on needs a little bit of force (or heating it a bit with a hairdryer) to snap onto the 2020 frame but then it fits like a glove.

(While writing this description, I discovered that user lorenzo__99 on Thingiverse, who created the Webcam Mount, also created a cable holder that does the same thing as mine: https://www.thingiverse.com/thing:4636343/files)