Sweetchristalf'mighty.
Any analysis of the numbers of times some one has gone postal with on-board cutlery?
I get on every flight carrying a near unbreakable wire and plastic cord quite long enough to wrap around a persons neck and throttle them with it. On one end is a hard plastic weight with three big metal spikes on the end - I could clobber someone on the head with it if I wanted.
I've also carry a book that I could shove down someones throat.