You could always keep a pair of those big Ono Ha Ittoryu kote. In all seriousness I proposed a Zombie Apocalypse mitigation plan as the subject of my master's dissertation. For some reason they thought it wasn't a good idea...
The CDC did much the same. That is some awesome. http://emergency.cdc.gov/socialmedia/zombies.asp
I'd like to remind the folk in the compound that while I am old, fat, not into breeding and do not have huge stockpiles of ammo, I do know how to make both biodiesel and ethanol from common household items.