Though I do not wear a bow tie, when I rounded in the hospital I did carry that style of doctor's bag that contained my reflex hammer(s), stethoscope, tuning forks, OKN strip, triptan samples for when I got a migraine, keys, other miscellaneous junk. It is also useful for sticking in an elevator door as it is closing, as I am not IM who would use their hand or a surgeon who would use their head.