Most people won’t survive the zombie apocalypse. Fortunately there are items you can assemble today to greatly increase your chances of being one of the few survivors, and they’re all small enough to fit on your key ring. Most will be useful even before the apocalypse.
This is important. You don’t know where you’ll be when the zombie apocalypse breaks out, so survival gear sitting under your bed may do you no good at all. Keep them on your key ring, and always carry it with you.