Designed this in TinkerCad, super simple holder for Dyson Supersonic hair dryer. Mounts with 4 screws underneath a shelf or cabinet.

Creality

Ender 3

No

Yes

0.2

40

I used 3 walls and 40% infill just because. Took about 12 hrs to print. I left the surface rough as you see in the pictures, this is purely functional.

I printed it with the front edge of the cylinder against the bed, so supports are needed for the top portion. I did block out the supports that Cura tried to put in the screw holes, they're not needed. The support section snapped off easily.