Prepare for the Zombie Apocalypse with Overstock.com! The holiday shopping season is almost upon us, and if all the warnings are true, then the zombie apocalypse is almost upon us, too. Why not kill two undead birds with one stone by giving your loved ones the survival supplies they need? Nothing says "Merry Christmas" like some protection from the living dead. Here's what everyone on your shopping list will need when prepping for the worst case scenario.