i have a raspberry pi zero wifi thats running syncthing and has a few of my syncthing folders/nodes on it. i already have a NAS that acts as the always-on node for all my syncthing folders, but if that is ever down for maintenance or whatever then the pi zero is sort of a backup that will keep syncthing things

i have another running kodi so i can access jellyfin that's on my NAS

pi-hole for network wide ad blocking

currently setting up one to act as a storage location for the restic backups from my NAS instead of having to store them with some storage provider like backblaze. i will be installing tailscale on it as well so i can leave it in a friends house and hopefully be able to reconnect to it even if they move house in the future