I like to use Pokemon names, as the numbers of those first 151 have stuck in my head for many years for some reason. You can subdivide them in many memorable ways too, e.g. the author could say: "On my network, pikachu is my router, rack-mount servers are fire-type pokemon, embedded devices are water, gaming consoles are dragon, and laptops are ground type."

It would also has the advantage that you could use redily available pokemon stickers to attach to each device, and is a nice way to personify devices if you are so inclined - "Ivysaur is playing up again; time for a trip to the pokecentre"