Here's what I carry on my person whenever I leave the house:
In my pants pockets:

Folding comb
Benchmade folder
Mission Wallet

Mission wallet contents:
Credit card
Notepad
Couple of Bandaids
Plastic fresnel lens
Cash
Min ball point pen
Mini mechanical pencil
Ken Onion Chive folder
Sliver grippers
Maratac AAA flashlight
In my jacket:

Car key ring with:
Car Key
Res-Q-Me
DR Pico light
House key
EDC key ring:
Fox 40 Micro whistle
Swiss Micro tool
TerraLux AAA LED light
Spare AAA battery
CC peanut lighter
Coin cell LED light
Office keys
On my belt a DROID X smartphone.
The AAA spare battery holder is a battery stuck into a cable TV connecter cap with a fishing swivel and shrink tubing. The orange key ring is from County Comm with a piece of paracord sleeve cut to fit.
You might notice the reundancy/share factor here as I have two knives and 4 LED lights.
I carry lots of other staff in my traveling bags, cars, briefcase, etc.