50 TB on a network attached storage appliance across 8 drives, probably 200-400 GB across two laptop internal drives, and 500 GB or so of games on a Framework expansion card.
I may have a problem. Something something r/datahoarder something something.
I use Vaultwarden in Docker, which is a light-weight Rust implementation of the Bitwarden server. You can just point any of the apps or browser extensions to your server at login and it works seamlessly. The oficial Bitwarden Server is also available, but when last I used it, it was much more resource intensive and had a number of docker containers as dependencies instead of the single container for Vaultwarden.
For UniFi, I use a docker image--currently, I'm using this one.
I host the following off of the top of my head, in no particular order. Some are hosted at home on a combination of a Raspberry Pi 4 and a Synology DS1821+ NAS, some are hosted on a dedicated server:
I also run PFSense at home for my router, on a Protectli Vault, if that counts as self-hosting. Seems more like sysadmin, but there you go. I use Uptimerobot to monitor everything and create sleek public status pages.
Asteroid City was surprisingly good. Eccentric, but in the best way.
User-replaceable batteries.