I replaced my broken shell MX Master 3 but had already bought a new mouse. Long story short the only logical thing to do is to mount the mouse on a pegboard.
I grabbed the 3d scan on thingiverse from https://www.thingiverse.com/thing:5950945 and took a cut-out.
This is hangable on 1 inch separated, .25 inch hole pegboard.
PegboardMouseHolder_MxM3.stl | 592.1KB |