When an emergency strikes it's important that the whole family know how to respond. This includes the children. A fun way to teach them what's needed during this time is to make a game out of it. A good way to start is to have a scavenger hunt.
Give the children their own lists of supplies to find. They should include items like flashlights, food, and first aid supplies. Keep shoes and a change of clothes near the windows. Even children under 12 can get involved in the hunt with the help of a parent or older sibling. Put a limit on the time it should take to find their items. Set up a small reward for the first person or team to finish. If rounding up the emergency supplies is fun it will teach all members of the household to quickly (and accurately) find everything if the need arises.