This is on my rear door full time.
Stove, fuel, utensils, freeze dried food, lighters, flashlights/batteries, military knife, first aid kits, ect.
Enough grub to survive for about three days with full meals.
I do not have clothes packed into the ones on the doors, I carry extra in a separate REI day pack with a water bladder built into it.
It is a great idea for everyone to carry supplies like this.
We are told to do so even for work in case of a disaster and we have to spend the night(s) there.
We have cafeterias at work, but that food could go quick in a scenario like this.
Besides the bug out kit above, I also carry many tools for an emergency for the rig(s).
