I have a 4c8t unraid server with a bunch of storage.
It runs docker with all the arrrr containers.
It has pihole, duckdns and plex. I run some auto backups too.
I also have a Ubuntu and windows VM but they’re mostly spun down due to lack of use.
The server is mostly idle, anything else I can use it for that’s useful to me?
Home Assistant might be worth a look. It’s good for home automation and monitoring tasks.
I can’t speak highly enough about Home Assistant. I’ve run it for a long long time and it just gets more and more polished.