Print a cheap replacement for OEM E46 sun visor clips. I recommend printing at 100% infill to prevent splitting at layers when installed. I had good success with a 98A TPU filament at 100% infill with supports on. Just give extra support spacing with TPU and use a torch after to lightly clean up any strings. Wouldn't recommend PLA due to the high temperature that the inside of vehicles can see during the summer heat.
The author marked this model as their own original creation.