Well.. I didn't have time to be serious, but... I would probably use a bomb proof room, though. I have one in the basement. If it holds bombs, it holds zombies. I would have stored some weapons (knifes, forks, etc). I would have a tap and a thing that shows if the water is infected. If you think about the ventilation, I would have welded it. And the food wouldn't be a problem, since I am kinda paranoid, so I would have food for some years stored already. I would have some entertainment with me, and I would try to use communication. Morse/radio/anything that would have worked. If the zombies could break the door in a way, I would have a little room inside the bomb proof room. I wouldn't have much food there, but for some weeks/months.