I encourage you to join me over on Printables. Thingiverse seems to be an abandoned platform. I will leave my models active here for posterity, but I have moved this model to

https://www.printables.com/model/219973-parametric-led-strip-clip

From scratch remix of "LIFX Z LED Strip Thumbtack Mount Clip" from stephancasas.

I used OpenSCAD to make the model fully customizable. My use case was a cheap black light LED strip I got from Walmart which was only 8mm wide.

Including STLs for 8mm through 12mm light strips.

I have not tested in the customizer, but it should work.