END OF THE WORLD SURVIVAL KIT!!!?

So based on recent events(Japans Earthquake/Tsunami, Hurricane Katrina, Mexico drug cartels, *** load of tornadoes in the Midwest, Tennessee flooding twice.) I have concluded that the world is gonna end by december 2012 or whatever. I am building an end of the world survival kit. What the hell should I put in it.(like a large backpack cause i ume gas is gonna be more scarce than anything else by then.)