I have seen many BOB's in my time and some were wonderful kits that had allot of thought put into them. Some were odd arrangements with strange things like micro BBQ grills and other "luxury" items. When I think BUG OUT, I don't think BBQ....sorry dude.
What you pack will be based on your perceived needs, the terrain you are in and weather conditions so your BOB is bound to need tweaking from time to time. The standard 10 list should be represented of course but then you must remember that the BUG OUT BAG is really a small stock room on your back. While a backpack may fare well as a BOB, I take it a step farther.
My BOBs are duffels. Man portable-over packed-shoulder carried-Stack able duffels.
I found a duffel that screamed BOB and after giving it the twice over, I bought four.
They are heavy vulcanized nylon side stuffers. Water resistant (a good thing for long term exposure) and camouflaged which I thought would be very useful should I ever need to cashe one while on the fly.
I can easily carry thirty Lbs of support gear in this bag.
I carry for the family so items in these bags are not "tactical", they are for easing the stress of relocation....that's it.
Watch your six
RJ