Experimenting with an app called "Immersed" that lets you stream other devices over the network to your VR headset. They even have a native Linux desktop app, so I was able to stream gameplay from my #SteamDeck to my Oculus Quest 2 headset. I wouldn't recommend it for online multiplayer; Halo MCC online had a bit too much input latency for me, but for single player or casual games it would be more than ok.
@nerd7473 I mostly just use it to play Beat Saber occasionally for exercise; but I saw this mentioned somewhere and decided to give it a try just to see how it was.
I'd rather just play on my TV with a good wireless headset, but I could see how some people might find it useful.