So in the event of a breakdown, it goes without saying, that more than likely, you will not be going in to work. Even in the event of a total economical collapse, you will still need to trade and barter at some point. What tradable services and goods could you produce, that would help you get what you need, and then some? black smithing, electrical repair, carpentry, soap making, sewing and towing services, mechanical, etc would all give you an avenue from which to acquire goods. What are your ideas?