What's your favourite thing to self host and why?

Topic per title, basically.

For me: after setting up all the integrations and fall overs using the arr stack and Jellyfin (inc Sabnzdb etc)… I keep circling back to Nova video player.

https://github.com/nova-video-player/aos-AVP/releases

It’s arguably not even self hosting…but there something undeniably cool about sticking a USB stick into a router, installing a single app on your TV and boom, done. EDIT: of course, it can consume the *arr stack, integrate with Ombi etc

IOW, I really like stuff that simple to set up and punches above its weight class.