Before asking a question here, please use the search feature of Reddit, Google, or another search engine to make sure your question hasn't already been asked and answered. Your premise that "most emergencies would have a lot of us displaced" is factually inaccurate because most emergencies don't require people to evacuate their homes, so "bugging in" is the norm and is almost always preferable to "bugging out." Nonetheless, if you're interested in the idea of placing caches, please search past threads for many previous discussions about caches, most often about placing them along the routes to a bug-out location.