Another for the Prusa Mini Y Axis Motor.

Use a Neodymium Round Cylinder Magnet 8X3mm (Amazon). It's a tight push fit which does bulge out the body a tiny bit, but will fit with some filing on the part that goes into the motor housing.

Print Settings

Printer:

Prusa Mini

Rafts:

No

Supports: 

Yes

Resolution:

0.10

Infill: 

25%

Filament: Prusament PETG