In colo (a former nuclear bunker, no less!) I have a small OpenStack 'cloud' deployment cobbled together from spare hardware, pieced together in partnership with a friend of mine. I wrote a bit about it here if anyone's interested:

https://dischord.org/2019/07/23/inside-the-sausage-factory/

At home I have:

  A Synology DS412+ with 4 x 4TB drives
  An ancient HP Microserver N36L with 16GB RAM and 4 x 4TB drives running FreeBSD
  Ubiqiuti UniFi SG + CloudKey + AP
  An OG Pi running PiHole

The DS412+ is my main network storage device, with various things backed up to the Microserver. Aside from the OEM services it also runs Minio (I use this for local backups from Arq), nzbget, and Syncthing in Docker containers.