In common, I would imagine, with most of my colleagues, I carry an 'emergency' kit in my Flight Bag for unscheduled nightstops etc - such things as razor, toothbrush, bottle opener etc. Included in this was a 'giveaway' from a car manufacturer containing stapler, sellotape, and one or two other bits, including a pair of [blunt] plastic backed scissors.
These scissors (and I must admit I had forgotten they were there) have been through several X-ray machines at several UK and European airports.
Recently I was required to position from LGW to a european airport to start a service from there, and I had to pass through the passenger channel, in uniform.
The scissors were spotted, but despite me pointing out that they had been X-rayed hundreds of times, the jobsworth confiscated them, because, although I might look like a pilot, I was a passenger and therefore the scissors would not be allowed.
It's not the loss of the scissors that upsets me - as I said I had forgotten they were there, but the attitude of the jobsworth.