I never leave home without the following on my person;
At least one firearm, sometimes a back-up.
At least one knife, usually two.
An accurate time piece.
Car keys + backup.
Cell phone w/ camera.
Because of miniaturization, many of these can easily be carried concealed.
Pocket knife, set of keys, butane disposable lighter; small .32 Keltec pistol;
second set of keys ( duplicate of first set ); spare magazine for Keltec; folding police style combat knife; multi use tool on belt; cell phone on belt; emergency cash in money clip; wallet with ID's, driver's license, CCW permit and more cash; second wallet with second driver's license and CCW permit; sometimes, pocket change.
I don't really carry anything special in my pockets:
Set of Keys,
Combat Folder Knife
Small Multi tool on Keychain and LED Lite
ON wrist a good watch
I do carry a small Pack with:
Carry handgun and 1-2 mags and carry holster
Gerber or Leatherman Multi tool
Mini Mag with LED Lite kit installed
Waterproog match case
Butaine Lighter (weather proof)
Small med kit
Neck Chain with P-38/P-51, Can Bottle opener, Flint strike tool and magnesium bar
SAS POcket book