Small snap-fit cable carrier with enclosed top.
All the other cable carriers I'd tried to print either fit poorly or were too large.
Each link is slightly larger than a dime.
Still need to make end terminations, and I will likely be making some different sized derivatives in the next week.
Print with .3mm layer thickness, 1.5 w/t and no support for best results. Your printer needs to be good at bridges for this to print correctly.