My urban EDC is - in no particular order:

1) Cell phone
2) Mini Rittergrip
3) Fox 40 whistle
4) BSA Hot Spark ferro rod
5) Arc Premium AAA LED light

When outdoors I'd say it is the same, though the cell phone will be replaced by the PLB if potentially out of cellular range, BUT I certainly wouldn't limit my gear to five items. Water, shelter (bivy-poncho), bandanna, EOS headlamp, fixed Rittergrip, first aid kit, paracord, GPS, compass, map, and an MSR Miox go into my gear. I'm sure I've forgotten something on my list, but you get the idea.