ANYTHING can be used as a weapon......simple as that.
Bit of a throw away comment I know, but it is very true. Even a simple baseball in a sock (whoops...........everybody bare feet now, and it eliminates shoe bombs). High heeled shoe? The toilet seat would make a handy thing to clout somebody with. Is that a pen you're filling out your landing card with? Even a simple shoelace can be dangerous in the hands of a determinded person. If you really want to damage people, it doesn't take much imagination.
In this current environment, if a situation occurred where old mate grabs a passenger and puts a broken bottle to their neck demanding into the flight deck, I really don't think you would see the door opening very soon (and I realise this is very blood thirsty and heaven forbid it happening!!).
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