I added a rope light to my chicken coop - and the ‘glue’ on the back would never hold due to temperatures and dust. Instead, I designed this little ‘holder’ that can be screwed in and the light rope can be fed though it.

Prints with supports - easy to remove. Print as many as you need - I used one about every foot.

Note - don't drive the screw in too hard or you'll probably crack the PLA (or whatever you use)