I keep my kit in a GI buttpack that I turned into a shoulder bag by adding a double hook cargo strap. Cheap and effective, plus rugged. I can't remember everything I have in it without tearing it down, but I have a small first aid kit in an M-14 double mag pouch on the side. On the other side is another M-14 mag pouch with a .5 quart canteen and MiniMag flashlight. Inside is emergency rations in the form of hard candy, 3 tubes of glucose tablets, tea bags, 3 hot chocolate envelopes, sugar, salt and pepper packets from fast food joints, plus a 6 ounce plastic jar of mixed spices. If you have to scounge or hunt food, spices make it much better. Also a few bullion cubes are good. I keep a fair amount of cordage (550 cord and nylon twine), plus trip wire. I need to get a couple of locking snares, plus a folding saw. I keep a copy of Larry Dean Olson's survival manual in there, both for reference and to give me something to read. A small compass, maps, Gerber Strike Force ferro rod, cotton balls with candle wax for tinder plus a can of char cloth and extra squares of old t-shirt in case I need to make more char cloth. Extra batteries and bulbs for the mini mag, large garbage bags, plus a small solar-rechargeable light (2x2x1 inches); I also keep 3 tea candles in the bag. Extra glasses, and a throwing knife for a spear head. Sierra cup for boling water, making a cup of tea or bullion. Monocular, fine mesh face mask for bugs (very light and compact, very handy). 2 boxes of .22 ammo (CB long and Federal HP's). Pellet box of small nails and screws and other fasteners for field improvisation, sharpening stones and oil. Automatic fish catcher for fish or small game (reel with spring). Small roll of black duct tape and a roll of bandage tape. Sewing kit, fast food napkins for TP, wire saw, and I *think* that's it. I didn't list things in any order, just as they came to me. I also keep a mini kit with matches, fishing kit and the like in my pockets.
For knives, I like a 5-6 inch blade because it's easy to wear and have on your belt all the time. For an inexpensive, but still good knife, try a Glock Field Knife. I have the M-78, which is the one without the sawback. Great steel, around $40.00, and chops pretty well for a knife its size. Next up, expense-wise, is the BK&T Campanion. I bought one of the new ones for $50.00, and it's a great knife with a super sheath. More expensive, but really nice, are two knives on my wish list: Jeff Randall's Laser Strike (5 inch blade, $180.00), and the M-95 Ranger Puukko (6 inch blade, $150.00). ANY of these would be a great sheath knife for rough backwoods use. For a pocket knife, if I were only to carry one, it would be a Gerber multi-tool, preferably one with both a saw and a file. With a good multi-tool backing up a fixed blade, you can do a lot in the woods. If you want a regular "pocket knife", you can't beat a good Swiss Army Knife (SAK). I carry the Rucksack; it has a saw, can opener, bottle opener, awl, corkscrew and straight scredrivers. Very versatile. Also, the main blade locks. Hope that helps.