In his book, "Build the Perfect Bug Out Survival Skills," Creek Stewart recommends a "last ditch bag" and describes his. He uses a 6 x 4 x 2 waste pack that contains:
Leatherman
Emergency heat shield
Poncho
N-95 mask
Small first-aid kit
Aquamira straw filter
Non-lubricated condoms (for carrying water)
Corsair Padlock USB drive
Cash
Fishing kit
Light My Fire Mini Fire Steel
Fire Fuses
Disposable lighter
Duct tape
Carmex lip balm
Fresnel lens
Mini key chain LED flashlight
Energy bar
Pepper spray
Whistle
Mirror
10 feet of wire (for snares, etc)
Compass
I thought a similar kit would be a good idea to keep in the car or on my person if I have to bug out and I lose my bug out bag for whatever reason.
In light of that, this evening I ordered a 7 x 6 x 2 pouch from Army Surplus World in Houston, TX that can fit on my belt. Since it's a tad bigger than Creek Stewart's, I can add a couple extra items and set it up the way I feel would be best. I'm still iffy about carrying condoms for toting water. I think I'll buy a collapsible water container for that purpose. I'm also going to include a collapsible drinking cup, an extra pair of glasses, a small Bible, a larger "assist-open" defensive knife, and a length of paracord. With the paracord I can make a tent out of the poncho.
Here's the pouch I ordered: