Deck of playing cards. Box had to be opened and the cards flipped through. No swabbing though.
Laptop lock/security cable. Resulted in laptop bag being xrayed 2 times and then looked through until I was told "That cable things is confusing to see on the machine."
Was told that I had a lighter in my bag and next time to remove it. I told them I don't smoke that I'd just flown through 3 airports that day and hadn't let the bag out of my sight. To prove that there wasn't a lighter I told them to tear it apart and see that they were wrong. Excuse given when no lighter materialized: "It must have been the power brick for your laptop."