I'm ridiculously proud of what I've done with my scattered KVMs. I've picked these up over the years (#blackfriday) to move my homelab to the cloud (cheaper, quieter). They were a mess. Now, they are all connected. Single docker swarm. Shared storage tunneled over Tailscale. Best part, Ansible scripts take it from bare image to joined as swarm worker.
This swarm is running this site.