For my EDC I always have the following:
1) Buck Odyssey
2) Cell Phone
3) Wallet with all the regular stuff plus a pack of paper matches, and a small push dagger.
4) Cash but not usually a lot.
5) Key Ring Convenience Kit, includes- 2 aluminum pill vials, P-38, safety pins, nail clippers, solitare by mag, Leatherman Micra, and a small Schrade Lockback.
6) Keys on two different rings. One for vehicles, one for locks.
7) Chapstick.
When I travel back and forth to work I also carry a back pack with other meds, work folders, PDA, etc. But on the weekends it stays home