The goal is to pimp my dinner plates by adding soft rubber bumpers on the underside, so as to render them noise-free, i.e., clank-proof. However, I would also like to minimize resultant rocking, as happens with chairs that have uneven legs. Another thing to minimize is the amount of rubber used.
The unmodified plates have a circular contact with the surface underneath (flat surfaces can be assumed), and it is only the bumping of this circle with the surface underneath that need be factored.
(Initial idea: place the bumpers around the aforementioned circle.)