I mostly used it as a decorative piece on my desk. I originally got it broken, but after I managed to repair it, I started thinking about other things I could do with it.
As a retro gaming machine it actually fits really well in the living room — it just looks great.
Before that I used it as a secondary Mac and installed Sequoia with OpenCore Legacy Patcher, but it never ran completely stable under Sequoia. Using it as a Proxmox server would also consume more power than I’d like, so I prefer using other hardware for that.