Software
Calibre Web Automated: An amazing eBook library and has a lot of really
nice features like built in KOReader progress syncing and OPDS.
Docker + Portainer: Docker is great, can never remember how to use the CLI though...
FR24: RPI + SDRv4 for an ADSB feed through FR24.
Homepage: A good looking and easy to setup dashboard.
Jellyfin: Great for TV and Movies, and handles metadata incredibly well.
Karakeep: Like if Pinterest was actually good. A great firefox plugin, too.
SAMBA: "Opening windows to a wider world."
Navidrome: Music manager. Not a huge fan of this, but it is objectively better than jellyfin for MP3's.
YTDL: A very nice youtube downloader. The database system can be obnoxious but otherwise a great tool.
WebDAV: Used almost exclusively to back up KOReader readiding stats lol. Lightweight and easy to setup.