I agree in the handkerchief. I rarely am without one. It's amazing how many times I've had others need it's use.
I don't see a problem with the flashlight, but not sure I'd include it in the "properly dressed man" thing. Great to have, but IMO the flashlight function of phones has replaced the need to carry it as a separate item.
I would include a way of making fire. I almost always have a lighter in my pocket. Don't smoke, but it comes in handy very often. Usually just a cheap BIC, but not unusual to have a Zippo in my pocket. Never know with some lady needs a light or you've been offered a cigar. LOL.
