That is interesting :) That sounds a bit like Tyll's old job!
If it was me, I would have gone the easy and also proven way as well.
10 E12's? If I magically just got a hold of 10 E12's? I would engrave the backs and fronts on each of them with custom art and writing (different for each unit) and have them sent to 10 select Head-Fi friends who pulled me out of a sinking ship.