8) Kidnap an Orphan (Waterworld, 1995) – This post-apocalyptic future is literally a water world, dum-dum, so survival basics should be self-evident. Some kind of floatation device will be necessary. Jet-skis and catamarans appear to be popular. And if you can manage to collect enough old milk jugs, feel free to tie them together to form your own floating anarchic city state. But then, who wants to float on the open water, relying on filtered piss for drinking water (no, really) when you could be living on the lone remaining patch of dry land. Find an orphan with a map to the Promised Land tattooed on her back, and you'll be set. (Should be as easy as calling Tina Majorino's agent.) If you're into preventative measures: as per the movie's opening sequence, the last bit of the Earth to get engulfed by ocean appears to be somewhere in Northern Alberta. So if you've ever toyed with the idea of relocating to Grande Prairie, now's the time. Be sure to name your first kid Kevin Costner. I think things turn out OK for him.