In article , Dylan Smith
wrote:

It's so arbitrary though. Given the element of surprise, I'm sure my
leather belt could be used as a deadly weapon, especially as the belt
buckle is metal. Since it doesn't set off metal detectors, someone could
sharpen their belt buckle and make it into a rather nasty weapon when
swung on 40 inches or so of leather.

Weapons you can legally carry onto any airline flight:

- belts... (as mentioned above) can be used as garrots; with a
sufficiently heavy buckle may be used as a mace-like; the buckle may be
used as a puncture weapon; the belt itself may be wrapped around the
fingers to protect them when punching; may be used for binding

- shoelaces... may be used as a garrot, to trip and for binding

- heavy boots... can be worn on the hands and used like boxing gloves

- pens/pencils... can be used to inflict puncture wounds in the head,
neck, torso and extremities

- jacket/coat/shirt... can be used as garrots and to bind; can be use
as shield when wrapped around the hand and forearm

- elastic from bras and underwear... may be used as slingshot to propel
objects

Weapons found on the aircraft provided by the aircarrier:

- seat belts... can be removed with two fingers and used in a mace-like
manner

- serving pitchers... effective for clubbing

- soft drink cans (full)... projectiles

These are just a few of the items that come to mind. They are both
offensive and defensive. As a passenger, you have the right to defend
yourself by any means necessary.