We see so much insane USB crap around here that we were pretty apprehensive of a link entitled "Accordion USB drive," but color us magenta if the damn thing doesn't actually look incredibly useful -- instead of an easily-lost cap, the connector simply pops back into the case. Sadly, it's not a real product yet, just a concept by Polish design student Jacek Ryn, but we'll be the first in line if it ever gets real -- Engadget HQ is littered with far too many capless flash drives.[Via MAKE