On my FreeNAS server: gitea, plex, openvpn (w/ ExpressVpn), Mayan EDMS

I am unhappy with the complexity of Mayan EDMS. I'm debating moving to Paperless. All I want is a digital file system that 1) looks at directories and automatically handles files 2) has user permissions/personal files so I can let my family use it 3) has a web form for uploads.

I am planning to change gitea to sourcehut- the git service as well as builds.

Any ideas for things a raspberry pi 3 & 4 could be useful for?