One of my favorite characters on The Walking Dead is Michonne. I like her because she uses a sword to slice and dice zombies rather than a gun. If you are besieged with a bunch of slow zombies, I think a sharp Katana sword might be the best way to kill a hoard. I would want guns too though.
This is an official Walking Dead letter opener that opens sealed envelopes much in the same way Michonne dispatches the undead. While it doesn’t quite look like Michonne’s katana, it does look like a sword, and it’s sharp enough to use to open letters. That probably means the blade is completely dull and you simply use it to rip open the top of a letter.
The sword sticks into the rotting skull of a walker and looks awesome. I particularly like that you can see the sword in the mouth of the zombie. The sword is 11.5″ long and the zombie base is 13″ (H) x 4.5″ (W) x 3.5″ (D). You can get your letter opener for $89.99(USD) at ThinkGeek.