I used names of fictional robots, androids and self-aware computers (though I avoided HAL for obvious reasons) for a long time. These days my wife and I usually go with an indirect reference to the function or hardware - Ex. a device named Anathema, or a Raspberry Pi server named Marie (as in Marie Callendar, a former local pie/restaurant chain). I had an expendable frankenputer for tinkering that I called RedShirt.
Currently trying to come up with a name other than Chris for the PineTab 2.
Edit to add: Places I've worked have used Roman emperors, drink brands, Simpsons characters, and of course basics like "IIS1" "MAIL4" "QA-3" and so on. Some would add numbers to the names sequentially, others would use the last octet of the IP address.
Done. Sorry I missed it at first!