When I got a new PC last year I tried to sell my old one but couldn't find any buyers for a reasonable price, so I just made it my "home server" (much better than the Pi I had running before).
It has a 1080Ti GPU so I'm just mining Ethereum on it (T-Rex miner) which pays for the electricity and actually makes 2-3 extra coffees a month :)
Of course, mining uses only the GPU (and a little bit of RAM) which leaves the CPU completely free to run a bunch of other services. I'm running an Ark Xbox server and Jellyfin on bare metal, with everything else in Docker (on a Windows 11 base install): AdGuard, OpenVpn client + socks5 proxy, Portainer, Watchtower, Speedtest, Grafana, Prometheus, Awair and Ecobee exporters, CloudFlare DDNS plus a couple of other this-and-thats :)
It has a 1080Ti GPU so I'm just mining Ethereum on it (T-Rex miner) which pays for the electricity and actually makes 2-3 extra coffees a month :)
Of course, mining uses only the GPU (and a little bit of RAM) which leaves the CPU completely free to run a bunch of other services. I'm running an Ark Xbox server and Jellyfin on bare metal, with everything else in Docker (on a Windows 11 base install): AdGuard, OpenVpn client + socks5 proxy, Portainer, Watchtower, Speedtest, Grafana, Prometheus, Awair and Ecobee exporters, CloudFlare DDNS plus a couple of other this-and-thats :)