Ricoh GR III non-blocking hotshoe thumbgrip
It is a rather hacky modification i did in Orca slicer.
it could be refined a little more.
The way you use this is to have something in the hotshoe mount that keeps pressure around the rim.
The thing I'm using is a flash trigger for the FlashQ system
https://www.lightpixlabs.com/products/flashq-q20ii-black