I wear a suit to work and knives aren't really allowed so this is all I carry (and it kills me!):
- Gerber EAB pocket folder as a money clip
- Ronson jet lighter or zippo
- Gerber Infinity Ultra
- Cotton bandanna
- Personal pocket kit in jacket pocket (It's in my winter coat if I'm just doing the shirt and tie thing without a jacket)
Plus the EDC stuff I keep in my winter coat:
- Lanyard (clipped to key clip inside pocket)
- MEC accessory biner
- Firesteel
- Suunto compass/thermometer
- Matches in waterproof case
- Fox40 whistle
- Gerber LST knife
- Lanyard cord with clip (sinnet braided)
- Sunglasses
- Rite in the rain notepad
- Space pen
- 2 hand warmers
- Gloves, mits, toques, etc.