Obviously, close quarters combat is not the method of choice when dealing with the walking dead. But if you gotta cut their heads off, you'll want one of these Ka-Bar ZKs in your hand while you do it.
The ZK (Zombie Killer) series ranges from the petite 3 1/8" ZK-Acheron Skeleton to the machete-but-we'll-call-it-a-knife-anyway 10 1/4" ZK-Pestilence Chopper. These skull slicers are crafted from SK5 steel and feature neon green handles for easy retrieval in the dark. $13-70 [via Uncrate]