This thing can chain in a snake to hold the cables

Update:
The file thing.stl is a improved solution better and more stable when joined.

Big_Ring.stl and Small_Ring.stl used to close each end of the chain.

I printed in Afinia using ABS solid .2 on an array of 3x4.

There are a pair of rings to close both ends.

Here is the source piece
https://tinkercad.com/things/1ayDKYaUk9X