Must be my trusty and magical Logitech Wireless Desktop Keyboard. I have it since 2002 and still working perfectly. This keyboard has seen countless hours of playing, end-less posts and whatnot. And now the explanation of why I haven't replaced it yet and why it is magical: I use it with 2700 mAh rechargeable batteries and believe it or not, we have replaced them only 3-4 times since 2002!!! It's no joke. A curiosity related to this is that I didn't replaced its batteries in more than 5 years, because I did the first (2003, replaced the factory=crappy batteries) and the last (last december) replacements, while my brother did one or two replacements in the middle, he doesn't clearly remember.