It is far, far, far more important to start where you are than where you want to be.
The method used here is informed by a good Business Continuity Management - Capability Maturity Model
This is a document describing the variety of emergency supply kits to create. It describes the different types of kits and the possible contents for each.
Kits are created at each level in disaster planning: Individual, household, neighborhood, community, etc.
The kits described here are individual and household. Neighborhood kits are described in the section of the site focused on Neighborhood Emergency Teams.
All good maturity models have two dimensions: support and pervasiveness
Support, in the business context, means management support.
Pervasiveness includes percent of the organization participating AND the degree to which its integrated and focused on business scenarios.