I've historically preferred to use Culture series ship names (eg. GCU Grey Area, GCU Jaundiced Outlook, etc.), but stopped after Elon started naming his SpaceX ships like that.

I then went for Scottish Single Malt names (eg. Laphroaig, Jura, etc.).

After quitting alcohol, I've now settled on Douglas Adams names (eg. Deep Thought, Grunthos the Flatulent, etc.).

Naming machines is the most fun part of the job.