Have you checked out this site?
This is a great site for information on preparedness for natural disasters ( hopefully no "unnatural" disasters).
You can download an emergency supply kit list, view a video, and look at many other resources. There is a very kid friendly children's page to help your children understand the importance of being prepared at home and at school.
Also check out this:
Find out how to keep food safe during and after an emergency by visiting:
It is good to be prepared but let us all remember that God has also promised to take care of those who love Him and that is our ultimate safety!