WHY?

since everything for the Quest 3 will be available in more than a month, you have to do it yourself. 

Design

I took Jonas' design as a starting point and kept its holding mechanism. However, I wanted it to be so that I don't need any support and everything in one piece. 
The sound is also better captured here and directed to the ear.

Print

No Support
4 walls
5 Bottom and upper Layer
about 15% Infill
just mirror it for the left ear