Caddy's Automatic HTTPS Is Magic
Certificates that renew themselves, off the back of about three lines of config.
Homelab
Building a Pi-hole + Unbound DNS Stack
Blocking ads at the DNS level and doing your own recursion while you are there.
Building a Media Server Stack: Jellyfin + *arr Apps
Jellyfin and the *arr apps wired together so the library looks after itself.
Building a Home Dashboard with Homepage
One page that tells you whether everything in the house is still up.