Smoke vent head protector

The smoke vent in my kitchen is in the perfect height that my girlfriend regularly bumps her head at the etches by accident. To protect her I came up with a simple bumper which can be attached to the metal surface of the vent and possibly other metal based edges.

I found that it works best printed with a flex filament and 5% infill. Then it is pretty soft and protects the head nicely.

Glue 4 8x3mm magnets into each bumper, then attach it to some metal edge.