I know that the thousand islands crossing already has some sort of scanning device installed. Last year picked up a portable dvd player in the Fort Drum PX (a particular toshiba unit that I had been trying to get my hands on, and was sold out in Canada, they had stacks of them in the px) along with a copy of predator, threw out the packaging and put it in my daybag.
"Anything to declare?" gave him our reciepts, I decided to try my luck and not declare the player... border agent pops his head back in the window after a bit "and who's dvd player is that in the trunk?"
Stayed calm, talked my way outta it, guess since I was polite and there wasn't any hard evidence he let it slide...