For a while their was a "no tools" restriction. That one really struck me as odd. Some high-school dropout is given broad powers to play mr. security guy at the airport. I didn't fly for about 2 years after someone made me miss my flight because I had to check a jewelers torx security bit screw driver I had accidentally left in my bag (this was some custom, "let's charge you bucketloads for this bit" style screw driver); as if I'm going to disassemble the plane with that thing. so I decided, fuck them; I was not going to give them my money.