Seconding Smart Launcher. Automatic categorization beats pretty much every other feature I can think of in a launcher.
I try to treat my devices as commitments as far as spending but disposable as far as usage habits and not having invent my own categories helps me just USE my phone instead of playing with it.
I use Kavita because calibre-web doesn’t have reading progress. It can be a bit weird about what metadata it picks up from scanning your library. I have a lot of problems with books having the wrong metadata until I manually rescan the library.
I forgot to mention I also have a samba share running on it and it’s sooooooo sloooooow. I might need to reflash the thing just to cover my bases but it’s unusable for large or many files.
I use SSH to manage docker compose. I’m just using a raspberry pi right now so I don’t have room for much more than Syncthing and Dokuwiki.
Syncthing, Plex, and DokuWiki.
My needs are small but Syncthing is for standard file sync and DokuWiki is for a repository for my family. It’s been surprisingly useful to be able to spin and delete up a syncthing folder for some specific thing.
Plex is for my ripped DVDs and also a great way to consume my photos archive without keeping a copy locally on my phone.
Upside: Easy as pie and can be used by anyone who has used Dropbox/OneDrive/GDrive/whatever
Downside: everyone gets a copy of every file regardless. Good luck getting rid of old files. Could be fine, though.