I don't have this hammer myself, but if you ask me I think it is the best Kindle killer I have ever seen.
This tool is guaranteed to go toe to toe with any ereader or tablet and come out the victor. Measuring 14" long, this hammer features a custom designed head which is perfect for shattering the screen on the iPad, Kindle, or virtually any other device. On the obverse side is the head of a prybar; that should prove useful for ripping apart cases to get at and kill sensitive electronics. On the bottom of the handle is a spike which will serve as an excellent piercing tool for any screen which is too flexible or durable to be pounded to death.
Forget the txtr beagle, never mind the iPad Mini, and as for the Nexus 7, hah. The Dead On Annihilator can kill them all and you probably won't even have to break a sweat.
You can find it at ThinkGeek for $40.
image by yourcoco