Laughing in recalling that once, flying from JFK in New York to Madrid, and with just about everything in my check-in baggage, being asked what I had in my eye glass case. I opened it, showed him my glasses and the pen that I always carry there (I am, after all, a journalist). I was told that I could not board with the pen because that could be used as a deadly weapon.
Fair enough, so I tossed the pen into a nearby trash basket. No big loss, after all, I by them by the gross and pay under US$ 0.75 for each. The security person became quasi-hysterical - saying "You can't throw that there". I asked why not. His response, "How do I know it doesn't have poison gas in it".
I asked what to do. Pointing to a line of about 80 people he said that I had to take a place in line there, to check it in so it would fly separately on the plane and then claim it when I arrived in Madrid. The concept of standing on line for an hour or more to check in a 75 cent pen was beyond my ken. I walked to one of the nearby cafes, found a large napkin dispenser, slid the pen under that and, like a thief in the night finally managed to board my flight.
Ah well, as is sometimes said: "Even paranoids have real enemies"
Best
Rogov