I’ve got 3 “servers” at the moment running lots of fun services.
Dell Optiplex Tower
Sevarr Suite
Audiobookshelf
Calibre/Calibre-Web
Nextcloud
FreshRSS
Paperless
Linkding
Dillinger
HomeAssistant
Mealie
WikiJS
Gitea
PiHole
Homepage
Old Laptop
Project Zomboid Server
Minecraft Server
copyparty
Tinfoil/NUT
Raspi4
Klipper/Mainsail
Obico
VanDam
I also run Plex off of my Desktop, but I plan to build a new server soon to replace the Optiplex that I can migrate it to. I’m also going to be integrating Authentik. Everything is managed using Yacht and running on Ubuntu, then proxied through Cloudflare or tunnelled through Tailscale.