As some may have noticed a few pages back, I asked about that red Cherry keycap holder.
I'm essentially looking to achieve something universally better than any other option for storage of sets (as well as a version for novelties), and I think the SP plungers might be the best option to do something custom.
My simple question is, so I know how many plungers to order, is what is the average number of keycaps for sets? Using the keycap sheets as a sort of base for permutations, it appears ~127 is a general total (not including ErgoDox). Would I be safer with 150?