I wrote a quick post a little bit ago about how I name computers for Cornish Saints. Quite a few people posted replies to my question asking what others do.
solderpunk has settled on a Dune character for their laptop.
itsdave is using moons of Saturn. My wife would approve as a fan of the boardgame Solarquest.
bouncepaw is using location names from a fantasy series.
happycreature is using planets and stars.
There are several other backlinks in GUS, but they aren't loading for me at present. I did have a look the other day, but I've forgotten exactly what they were. As I recall there were more space and sci-fi/fantasy references. Those are clearly popular in these parts!
Thanks to people who answered!