Oculus Quest 2 Koss Porta Pro Headphone Mount for BoboVR M2
I found the original would sit behind my ears when mounted to the BoboVR headstrap (using this clip) so I slightly modified the plate to adjust for that.
I also made some minor changes to the geometries to make the parts easier to print and assemble.
Refer to fortinmikes prusa page for detailed assembly instructions.