I can see that. If you just want to hang out in a space, then VR Skyrim definitely has some cool places to hang, but how long are you really going to spend in that Skyrim tavern?
When OP asks whether VR is a long-term option, that's what I think. My favorite 2D games I have 500+ hours, probably a half dozen of them; I can still go back to those, some 10+ year old, and sink another 50+ hours. The only VR game I have more than 50 hours is the mini-golf game that's glorified chat.
For me, VR as an experience has been really amazing. It's a level of immersion that's just indescribably better than anything 2D, but each of those experiences has had limited staying power, which I think is because the physical demands of VR constrain my playtime and focus. I can left-mouse-button all day, but my back gets sore if I stand for three hours. So I can handle beat saber because I treat it like a gym session, but the idea of VR walking 7000 steps to Skyrim's Throat of the World...just no.
Sensors. Especially sensors in your living space where fans or other noise from the proper server would be distracting, or in a tight space - inside your HVAC, for example - where a proper server wouldn't fit.
Media front-end. Most of those SBCs are more than enough to run a kodi or jellyfin frontend, fanless for minimum distraction.
Robot. Low power requirement so it could be mobile; but there are lots of stationary possibilities. GPIO libraries are great for running servos and there's tons of libraries to facilitate.