This massive, informative guide on survival basics from the Tokyo Metropolitan Government will teach you how to turn pants into a backpack, how to make an emergency lantern with a plastic bottle, and much more.
The "Disaster Preparedness Tokyo" guide (subtitled "Let's Get Prepared") was designed for Japanese residents to prep for an earthquake and other potential disasters hitting Tokyo. Nevertheless, it offers universal things you can do to stay safe in an emergency, wherever you are. The well-illustrated survival tips also cover basic first aid, emergency supplies, and clever uses.
Download PDFs of the guide's chapters for free at the link below. There's even a bonus Manga comic, Tokyo X Day.