Let’s be real here. Are you able to dig up your yard to pour a concrete bomb shelter or are you willing to give up your man cave for your heirloom seed repository and armory? Me neither. I try to evaluate what is reasonable for me in my living situation to be prepared for possible situations. I have set aside some space in my basement, pantry and a few other rooms, keeping certain things around in each area. I have about 500 heirloom seeds, keeping in mind the region I live to give me the capability to grow vegetables year round.