Have you ever wanted to run a cable along the wall?
With this, you can make it happen by drilling only tiny, barely noticeable holes in the wall, as it can be secured with a tacker.

I’m printing it with PLA, but ABS or PETG might be more suitable.

The design is intended to allow the tacker to fit neatly into the groove on the plate section. However, even if you miss the target, the tacker should still be able to pierce through it.