I have a few cables I need to run from one side of my desk to the other. I'd like them to be at the back, under the lip of the desk. I need a way to keep the cables hanging there tidy.

The best I can find is this cable clamp. I'd just screw one side in but not the other. It's not perfect but gives you the idea.

There's also this cable tray, but it's probably a bit big. It's only a couple of small cables, under a dark brown desk.

Any ideas for something I can buy locally?