I picked up a Synology NAS to tinker with self-hosting a bit, and it's been bizarrely pretty fun. No idea if it'll actually reach the point of paying for itself, but I'm using it as an excuse as I cancel subscriptions to things I'm now self-hosting. So far, I've replaced:
- 1Password with a self-hosted Bitwarden (Vaultwarden, actually) server
- Netflix, Hulu, HBO MAX, Apple+, Apple Music with a Jellyfin media server
- Mint (well, Mint died and was free anyway, but...) with Actual Budget
Plus I've got a little Pi-Hole DNS server running, blocking all ads on my local network, and a HomeAssistant server, which I'm not entirely sure what to do with yet, but currently has an automation to turn on a light in my office when my camera is on, so my wife knows when I'm in a meeting.