In reply to:

Here's a thought: you know how the number keys ...


hmm... Year?, Artist name such as 10cc?, Track names like 2112 etc?
OK, so Year isn't that useful but someone probably uses it. For the others I would say they are used quite a lot.

beaker
32 gig (various colours)
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Marcus 32 gig MKII (various colours) & 30gig MKIIa