I recently started naming my devices in a certain scheme:
Laptop - Sagittarius (central black hole in the milky way)
Server - Sirius (brightest star visible from Earth)
Pi - Centauri (closed star system to us)
Any iot devices would be named like unnamed planets (i.e. Centauri A, Centauri B, ...)

Do some of you have cool/interesting naming schemes for your devices?