This variation of the Light Clip allows you to mount the Light String at any angle including from the ceiling. This particular clip is designed for a .500" diameter string. I'm testing the durability of the PLA material during a Northeastern US winter.

The clip was printed on its side so that grain direction was in favor of strength. It can be printed on its back, as shown here, but may not hold together when snapped over the Light String. Just my opinion.