Latex Perfection: Unfortunately, no longer nearly so useful as it once was, due to the difficulty of compensating for all the exotic sensoria of all the species out there, never mind the sheer range of possible sensors.  (Mass-market cameras, for example, tend to cover everything from high radio bands through X-ray, in EM spectrum terms.)  Disguising yourself as someone else tends to involve growing clone-bodies, or bodysculpt, at the very least.