I carry, in my pockets, a match safe with w/p-w/p's and some commercial tinder, two minibics, a three-inch folder, an old LM wave, ten or twelve feet of paracord and a Steamlight 2-cr123 TwinTask, whenever I'm out in the woods. And even when I'm not.

Also, for the woods, I have a belt pouch kit, that usually resides in a lumbar pack, that has, among other things, two large trash bags, a heetsheet blanket, a small FAK, more paracord, a photon, water treatment tabs, a roasting bag for water and a smaller folder (Spydie Dragonfly). It also has most of the contents of the Ritterkit. There's a Sierra cup dangling from a biner attached to the pouch. I usually wear the lumbar pack when I don't have a backpack, so I can carry water bottles. If not, I put the kit on my belt.

I sometimes wear a sheath knife, which carries another small flashlight, a firesteel, tinder and some bug spray. With an emergency poncho in my pocket, which I almost always remember, I think I would be fine with my pocket carry alone, most of the time. The sheath knife helps, and with the belt pouch, I'm livin' the life of luxury.

The simplest, cheapest and best way to begin to assemble a kit is, IMO, to buy a Ritter PSK. Add a knife, a fire kit, and an AMK heetsheet, maybe a poncho and you should get through a lot of trouble. The Ritterkit isn't everything you need, but there's nothing you can't use, and the quality is unmatched for the price.