The air vent hook can be used to attach lightweight items such as FFP2 masks to a ventilation grille.
Print settings:
Orientation: Flat on the printing plate
Material: PETG (or similar, because it can get very warm in the car)
otherwise can be printed as desired.
Installation:
You have to turn the hook 90 degrees, then you can push it through the vents. after that, turn it back to the original position and it "slides" into place. To remove it later, simply push it back a bit, then turn it 90 degrees again and pull it out.
(only tested with newer VW models)
The author marked this model as their own original creation.