BigStick-
I can somewhat agree with the deodorant, but disagree on the toothpaste. Dental hygiene is a critical factor in combat readiness. When a guys goes down from an abscess or a cavity, it kills your mission capability. Failure to maintain dental health can actually kill you. Poor dental hygiene is one of the "stealth" causes of heart disease. I'm not a doctor, but I do have to keep my platoon at full strength, if at all possible. In a long-term survival situation there are obviously alternatives to OTC toothpaste, but I wouldn't recommend ignoring the issue.
Bfunk-
This is a rough framework you might work from, though there are hundreds of lists available online. Check backpacking and survival sites (e.g.
SurvivalBlog.com) and then adapt to meet your own needs. Backpacker magazine is
Mini kit (fits in a Camelback M.U.L.E. or comparable pack)
-Folding Lock-back knife
-Compass
-Matches/Lighter
-Tinder
-Flashlight
-First Aid Kit
-Space Blanket/Survival Bag
-Water Purification Tablets
-Water bottle/Canteen
-Canteen Cup (aluminum) (canteen & cup in a molle pouch attached to the pack, comes in handy for purifying water when your 3L hydration bladder runs out)
-Duct tape (folded flat)
-100 ft 550-Cord
-Fishing line, hooks, sinkers
-Scalpel/razor blade
-Fleece cap
-Ultra-thin Neoprene glove liners
-Work gloves
-Compact waterproof jacket (folds into itself and zips shut)
-Sunscreen, chapstick & bug repellent
-Couple of powerbars
-Can of dip (what can I say? It's important to me!)
The M.U.L.E. then can fit inside a larger ruck I have that has two sets of clothes (base layer, casual, insulating, and shielding) 5 pairs of socks, and some other tools and things I consider essential.
Vehicle Kit (not counting mechanic tools or fluids)- Preferably in a 4x4 vehicle
-3-10 gallons of water (2x 5gal jerry can is great!) or a couple cases of 3x 1gal
-Case of MREs
-5x8' Camo tarp
-Sleeping bag(s)
-Compact tent
-Bundle firewood/charcoal & fluid (cheap and easier than chopping it your first night stranded in the rain and cold)
-E-tool
-Hatchet
-Extra cigs/dip (as applicable, 'cause when you need it, you REALLY need it! LOL)
-Short handle full-size spade shovel (summer), short-handle "coal" shovel (winter)
In the truck I also have a full complement of mechanic tools (which I mostly know how to use, BTW

), spare parts, and most of the necessary tools and patching gear (always adding to it!) to keep the truck on the road, short of a catastrophic engine or drive-train failure.
And honestly, I have a good number of other bags and kits in various states of readiness and deployability that I need to sift through and refine.
There's another post on this by ScubaDuba, really has it locked on. As a Ranger should.
Keep in mind, that you should always layer your security, both on a physical perimeter level and a personal gear level. Just as you layer your clothes, you can layer your kits. They should be compatible and supplementary while not being overly redundant. You should be able to ditch your vehicle and survive, and then if worst comes to worst, ditch your pack, and still survive with a small pouch or what's in your vest & pockets.
Semper Fi