Summary

This is a Thingi to clip your sun glasses to the sun visor.

I used PETG because it holds up better in a car.

Print the main body of the holder on edge with support.
Print the latch flat.

I used a "C" clamp to press fit the magnets into the hole.

Hardware required:
2 magnets 8X3mm
2 self taping screws m2 X 16mm