This is a bag you can grab as you run out of the house in an emergency. Emergencies like: flooding, fire, hurricane, etc. What would you put in it? What kind of bag to use (maybe a backpack)? Maybe more than one bag?
You're basically looking for things to bring as you escape to a safer place, realizing that it might take a day or three to get there and you might be stranded in your car for a while (e.g., in a traffic jam).
Consider places you might go to if you have to run for some reason.
Bag type to use
First set stuff to pack
Zip lock bag (keeps them dry and together) holding
Food & first aid
Needed medical equipment