This is always a fun topic that simply 99.999999999999999999% of clerks dont get at all. There view of the world is so narrow its not funny. Its sad that I have a 1 minute SNL monologue that just shows how stupid TSA is. They like to argue that a <1" blade on a mini leather is a threat, but yet the following list in my carry on isnt, in reality a pocket knife is a non threat.
Forceps
Mini-Medic bag (full bag of torture devices that can also save your life)
Trauma Shears (can cut quarters with ease as well as bone)
Fiskar scissors (surgically sharp and are a 2n1 with the screw removal)
Stethescope
Blood Pressure Cuff
Glucometer
Chop sticks
Wood pencil
Bic Ballpoint pen
Cross Pen
Canon 5DmkII w/ Canon 70-200 L IS lens
Tripod
Monopod
Lightstand
Flash unit
Rechargable Batteries
Laptop
Powersupply and cord
magazine
Spoon
Spork
Nalgene bottle
and so on between my backpack and rollaboard there are more then a few.
Then there is my mind and body, that is the most dangerous combo there is because with my bare hands I have the power to save lives or end them.
Just about anything can be used as a weapon, which i will second the jail comment as i have seen some very ingenious weapons and ways of hiding them.
woo hooo 1000th post