I probably could list a handful of items, but the first one who comes up immediately is my TEK keyboard. Since nearly two years I'm using this ergonomic keyboar

I probably could list a handful of items, but the first one who comes up immediately is my TEK keyboard. Since nearly two years I'm using this ergonomic keyboard, and it's just great. It has a real steep learning curve and will drive you insane for the first few "weeks." But after some time you will love it. I can now type blind and type much faster than on any keyboard before. My hands rest in one place all the time only my fingers move. For me, this keyboard is a great design. It has its price, but for something that I constantly use to earn my income, it is more than worth it. The only negative thing is that you get confused when using a "normal" keyboard. But after some keystrokes, your brain will switch modes, and you can type as before :)