I'd add the following items of interest to the original list, which are in my own various "Get Home Bags" and our Truck Survival Kit as well:
1. A Container --- to boil/sterilize water, melt snow for drinking, washing up and cooking.
2. Micro Cord --- comes in various sizes but what I picked up at a surplus Army/Navy store is 1.18mm in size. Great for repairs, fishing and assorted projects.
3. Upholstery Needles --- when in the U.S. Navy and as a Boatswain's Mate we called these "Sailing Needles." You can pick up a dozen of these for $3 at your local arts & crafts store. They are much larger than standard sewing needles. Some are straight and some of the needles are curved. Using the guts of your 550 cord (or the Micro Cord mentioned above) you can repair your foot gear, web-gear, ruck-sack, clothing, etc.
Take care, campers...
Retired, U.S. Naval Special Warfare
"SALVATION IS OF THE LORD (Jesus Christ)." -Jonah 2:9c [KJV]
"Salvation is of the LORD (Jesus Christ)." -Jonah 2:9c [KJV]