Tip for Surviving the Zombie Apocalypse--Canned Food, No Opener?

We all know the joke about the survivalist who stocks up on food, then forgets the can opener?  Well, fear not!  There's a handy video for making do.  So when you are scrounging, go ahead and stock up on the cans.  You've got the know-how, now!

What other odd concerns do you have for surviving the zombie apocalypse?  Let me know and I'll try to find the answer!