I think a similar post came few time ago, but no ashamed in my case. I use late pet names, for me as a tribute to their memory. Also, I try to put some logic in the name, like the squirrel name for a lightweight VM with not much services / workload or dog name for the reverse proxy (guardian function).
At home at least try to put some meaning, but at corporate environments as some have mention I got with the classical location-function-environment-XXX _U
Edit: some typos, because fat-fingers are a thing.