Silenced my Mini+ by replacing the X+Y axes bearings with drylin RJ4JP-01 polymer bushings - the difference is astonishing. Modification took around 1h including bed leveling. : r/prusa3d
3D Printable Prusa i3 mk2 igus bearing mounts update by Kent Thoresen
Prusa Mini Y-Axis Bearing Holders by JoesTinman | Download free STL model | Printables.com
Prusa MK3S/+ X-Carriage for Igus Drylin RJ4JP-01-08 by DFliyerz | Download free STL model | Printables.com
Igus Drylin RJ4JP-01-08 Anet A8 Prusa i3 3D Printer RepRap LM8UU Bearing 7 Pack for sale online | eBay