Selfhosted

I use futhark runes for my machines and set an ASCII representation of the rune symbol as the /etc/{issue,motd}

Sounds like you could start using the names of moons. But a pantheon does sound like a good system too, should also include the titans.

I started with Die Hard characters (Hansgruber, NakatomiVault for Nas, John McClane, etc) but lately have been doing Back to the Future. I've got a Marty McFly, DocBrown (old server), and BiffTannen.

Usually just names/lyrics of my favorite songs
iPhone: ByeByeBaby
AirPods: You're on your own, kid
Laptop: InnerMonologue
Except just for fun, I named my HomePod Cortana

Also some kind of Machinery. "GameMachine" for my Xbox "BigMachine" for my PC "MiniMachine" for my Phone "MicroMachine" for my Pi

Except my small 2-in-1 Laptop. That's "decepticon". Because it's an Asus Transformer Book.

Not just for devices but also my hard drives, I use the names of stars. For example Rigel or Betelgeuse

My devices are all named after things from the Star Wars universe, in particular:

• Stationary computers are named after planets (my "main" PC is Coruscant, the old "main" that was Coruscant before is now Corellia, etc.)
• Laptops are named after mega-stations (DeathStarI, DeathStarII, Starkiller, etc.)
• Tablets and comparable sized devices are named after giant starships like the Super Star Destroyers (Executor, Lusankya, KnightHammer, etc.)
• Mobile phones are named after regular sized starships (like Tydirium, TantiveIV, SlaveI, EbonHawk, etc.)

pi

pi3

pi3v2

space

fusion

magnet

qdivision

Different Japanese food from this list, cause they are delicious.

I do robots from video games, movies, TV shows, etc.

Royal-Cat-(Computer type)

for example, Royal-Cat-PC or Royal-Cat-iPhone