Yea, you might want to take out, the blades, bright lights (could blind someone to submission), hooks, matches, needles......etc. Probably the only thing you'd be able to take is the tin. Really, I wouldn't want to have to take apart my PSK in whether it had anyhting dangerous in it or not. I'm not going to unwind all the 550 rapped around it, and the tape. Then seal it back up.
Not worth the effort, just throw it in luggage.