Let's see.

• A meda stack (plex/jellyfin, sonarr/radarr, sabnzb, etc).
• an instance of foundryvtt
• a local mirror of 5e.tools
• a "tilt pi" ( Bluetooth hydrometer that supports webhooks/apis)
• ad (I need to decom this and just use aad)
• some raspberry pi's running octoprint.
• pihole.
• "general networking stuff" (wire guard, openvpn, network monitoring, etc)
• nginx as a reverse proxy.

I'm sure I'm missing stuff but that's a basic list.

A bunch, mostly for "production":

• Jellyseerr
• Jellyfin
• Radarr
• Sonarr
• Bazarr
• Lidarr
• Readarr
• Powlarr
• Sabnzbd
• Transmission
• JDownloader
• nginx proxy manager
• pihole
• mailcow
• snibox
• syncthing
• syncthing relay
• zabbix
• Papermerge
• Webserver
• mqtt broker
• samba file sharing
• a few gameservers
• IRC client
• Paste service

And everything runs on proxmox ve and is backed up by proxmox backup server ;)

• Radarr
• Sonarr
• Lidarr
• Prowlarr
• Plex
• Pihole
• Papermerge
• Syncthing
• Guacamole
• Klipper
• Octoprint

There's probably others. Just a quick off the top of my head list.