I have, including raku pots and a brass bound-19th C pulpit Bible which could have killed any number of people even without the wrath of God being invoked!! And of course these are carryon because one cannot risk them in cargo. Also with (at various times) a whole frozen salmon, a potted primula, and once, a 10 lb fruitcake encased in aluminum foil, which my DD predicted (and sincerely hoped) would be mistaken for a landmine and blown up on the tarmac (it wasn't).. I never wear an underwire bra or my hiking boots to the airport. And like most people, I have turned on cellphones, or discplayers or whatever else to show that they are what they are. It is just part of the airport routine, and you do it.
Twenty years ago, when I lived in the North and flew into the high Arctic, we never flew without a knife--it was a matter of survival. The first time I flew after coming back down south, I forgot the hunting knife in my briefcase, and the government pilot (fortunately) thought it very funny that I was equipped to hack and slash my way through the wheatfields and provide gopher stew for supper in the event of a crash. I still routinely carry a pocketknife --a matter of habit, from art school originally--and have to be sure every trip that I have left them at home!! Dawne