I used "Concertomeister Baso" (https://www.amazon.de/dp/B01MXW4BGR) however other products should work as well. Edit the CAD model for different type.
(btw, if you wondered: They have brown stains because of an espresso accident ;))

Using this plate, the grinder will be a bit more wobbly, but much more silent, as almost no vibration is transferred to the kitchen cabinet.

The model length was restricted to 180mm, so I was able to print it on the MINI.