TLDR: if you're a VRChat player/enjoyer, Find a cool world in VRChat to pose in with your favorite avatar by yourself or with friends and take a picture with the in-game camera.
Alternatively, "Elite Dangerous" is a great desktop background generator! Find a cool spot and take a screenshot. Boom. New desktop background haha.
/end TLDR
I play alot of VRChat and I found a cool world in VRChat called " VR art 'New place' ". It's basically a VR art museum where you click on the "painting" and it teleports you inside of it. The scenery in the world is super super pretty and very cool; I highly recommend it.
What I did is I found a spot that I thought would look good for a desktop background. I posed on a dock facing a giant moon. And then used VRChat's fly camera to give some distance. Thus making my avatar appear small in the center and expanding the view of the art in the world. That way the focus is moreso on the world with my small avatar in the center.
It's kind of like placing yourself in the middle of your favorite desktop background. Granted I suppose any experienced photoshopper or photographer could do something similar haha.
As for Elite Dangerous, I've enjoyed flying my ship to a cool star system and then using the spectator camera to take pictures of cool phenomena and use those as desktop background too. Some of my favorites include: landing on Ring planets, finding a tiny planet with a view of 3 or more stars, or pictures of black holes.