I needed to route some cables along a wooden pillar, but didn't have any clips at hand so decided to make some.

Fully parametric, please download the .f3d and open it in Fusion 360. Under parameters you can adjust all parameters to your needs.

You can suppress or unsuppress the fillet on the corners, whichever you prefer.

Print in PETG/ASA with maximum walls. Most likely would need a brim.