This model works with outdoor string lights I bought at Costco and Home Depot. Outdoor string lights have small mounting points where they can be attached to buildings, post etc. However, the mounting points are undersized for example, for attaching a string of lights to the wall of house and then perhaps to a wood post 20 feet away. This mount, which as multiple screw holes for flexibility, takes the forces off the small undersize mounting point, and spreads the forces over a larger area by cradling the light assembly.

I printed this with ASA for strength and UV resistance though PETG should work.