first aid - duct tape, non- adherent pads and 1 big trauma dressing
water - a way to carry it and at least 2 ways to purify
food - something compact and calorie dense - Datrex/Mainstay is portable and stable
shelter(tarp/tent) - Adv Med HeetSheet and Bivy
clothing - wool socks, gloves, wool hat and peaked cap - a good outer layer. I wear Merrels or Danners every day so I don't keep boots in my crash bag. If you wear something on the dressier side you might want to consider stashing boots. Your feet and how you treat them will make or break you...
knife - ESEE-4
multi-tool - Charge TTi
led flashlight(extra batteries) - Surefire G2L and Petzl headlamp
fire making method - RAT Firekit, tinder, Bic x 2
firearm w/ammo - G23, mags and IWB holster
way to haul all of the above - the toughest part is choosing a pack (I'm a Cordura pimp...)
- 550 cord and mason's twine
- stainless flask of good single malt and a Pelican travel case of cigars...
Remember - cash is king. A couple rolls of quarters for vending machines that may still be operational and a fistfull of dead presidents will often accomplish what asking nicely does not. A clean credit card or a pre-loaded VISA/MC is also a great idea.
A secure flash drive with all of your important docs scanned on can be a life-saver. deeds, ID docs, medical records, banking info, photos, all sorts of otherwise irreplaceable documents. Encrypt it and stash it in a Pelican box for additional protection. I like IronKey...
blake