In my pack, I carry a notebook full of lifehacks. It's my urban survival guide. I've also collected some stuff on general survival. 100 feet of para cord, and four 20 foot lengths of para cord, a lighter, two books of matches, Four AAA, for AA, four D and four 9 volt batteries, some rubber bands, a small flashlight and a PFAIK. I sometimes carry a small fixed-blade knife, depending on where I go. There's room spared inside for area-specific EDC. I fill this area with whatever is appropriate for the area I'm going.
In my pockets, I carry my wallet, keys, a folding pocket knife and my cell phone.