In Australia - In the top ten would add the following to the top ten in BoB, based on rule of threes, "
In any extreme situation you cannot survive for more than:
3 minutes without air - 3 hours without shelter
3 days without water - 3 weeks without food.
Item I would prioritize:
- Stainless steel canteen that can boil water
- Letherman type multi tool or fixed blade knife
- Axe & saw blade
- Tarp
- Sleeping bag
- fly/mosquito net
- First aid (antibiotics & gasto stop)
- Food
- Crank radio & torch & USB charger, fire lighter combination
- 22LR rifle
Cordage - there is always wire - clothing, seat belts general mess lying around that can be used for cordage - not a big priority but in reality there are a myriad of small items light weight items that can be easily carried or integrated in your EDC, like a wrist watch that can be used as a compass etc..
OK I left out fire, if you have a vehicle can use cigarette lighter or two wires and short out the battery, can use reading glasses that I carry - a lighter can be part of EDC not needed in BoB, also I think some crank radios have fire starter as well - also need to learn to make fire without any modern tools.!!!
http://www.amazon.com/SE-FL3139-6-In-1-Dynamo-Starter/dp/B008JRRBJY