Mimicing a thread I saw elsewhere.
I generally use this list to name my machines: https://en.wikipedia.org/wiki/List_of_mythological_objects
For my main server I use loeding: a modified version of Lædingr, a chain forged by Thor to bind and were broken by Fenrir. (Norse Mythology)
I’m a Sysadmin, so my names are purely functional:
host-pmx-01 through 03, my 3 node Proxmox cluster
vm-[SERVICE], optional 01-03 if needed
ct-[SERVICE], for LXC containers
It makes it easy to reference things via DNS for service discovery.
Treating your servers like cattle, not pets. Good sysadmin :)