Humanius

Considering that you could hypothetically leave personal information in your comments, would those comments not also need to be deleted?

GDPR also allows you to do a data deletion request.

How would one realistically go about testing their backup? Do you need a bunch of empty drives?

All my devices get named after cities. I try to make it somewhat relevant to the purpose of the machine.
Usually things related to the device (e.g. network shares) get named after neighbourhoods in the respective cities.

• Main PC: SAN-FRANCISCO,
• File server: SARAJEVO,
  • Shares: VRATNIK, BISTRIK, SEDRENIK, HRASTOVI,
• Work laptop: SEATTLE,
• Phone: BARCELONA,
• Media box: CANNES.

My boyfriend names all of his devices after planetary bodies, much like OP.
Thing related to the devices are named after the moons of the respective planet.

• Main PC: SATURN,
  • Drives: ATLAS, PROMETHEUS, TITAN, HYPERION, JANUS,
• File server: JUPITER,
  • Shares: GANYMEDE,
• Phone: PLUTO,
• Laptop: CHARON.

(He just realised that last one is inconsistent, and is renaming it to MERCURY)