I like the idea of trying to blend-in: neutral clothing, shouting something to make you look like you're one of them, having that crazed look in your eyes, etc.

I also like the idea of the minimalist survival kit: bandana, energy bar, etc.

Another thing to prepare for an escape is BE PHYSICALLY FIT. If you can't hunker down somewhere, you are going to have to run. If you're with a kid, you will have to run while carrying yourself, your stuff, your kid's stuff and your kid who weighs 40 pounds or whatever.