This is getting totally out of hand, take a walk around the LHR duty free shopping area and look at the number of items that you could turn into weapons!
Or even take a look around your own aircrafts cabin, you could start with the mirror in the toilet!
Trying to stop people from bringing stuff on board isnt the answer, while this may stop the "old traditional hijacker", it most certainly will not stop a determined attacker.
Mutt.