i may add that while most of us have some if not all of that stuff i listed..... a mall ninja usually wears it all at once as his daily ensemble. a non-Mall Ninja won't wear it everyday as part of his ensemble.
so...a few items i forgot to add.
1. tacticool watch (Luminox, G-Shock, etc, Chase Durer if you're really cool...)
2. a cover (boonie hat, Army BDU cover, USMC cover, or even a black baseball cap with your favorite firearm logo) - this is not to be confused with an everyday cap or hat. a cover makes you tactical.
3. gloves. black, either nylon, scuba material, or leather. something like those BlackHawk gloves. if they're not worn they are secreted in one of the pockets in my 5.11 gear.
4. tactical belt. not just your ordinary everyday belt but a nylon, thick belt preferably OD green, black, or tan, that has a big metal buckle you thread the belt into and wrap the excess out and fasten it down with velcro. something like a Blackhawk, Wilderness Tactical, etc. belt. may even have emergency rapelling hardware on it in the event you need to rappel.
5. wallet. black, either nylon or leather, that will hold your "credential:" security credentials or your CCW in a plastic window. maybe even have your "Concealed Weapons Permit" or "Security" badge inside it, so when you go to pay for something it accidentally becomes visible.