I see a lot of food, high protein bars etc. Something i'm not seeing, toothbrush, tooth paste, or baking soda. Baby wipes, something along the lines of those clorox wipes for actual sanitizing, AND TP, or those travel tissue packets. You stuck for more than 3-4 hours, something to clean teeth and lower extremities never hurts. We have a small travel toiletries kit packed with everything else.
We look at a breakdown bag as carry on luggage. What do you need if everything else is unavailable.