
This keyboard has the same measurements as a standard 102-key keyboard, but there’s a big difference. You can roll this one up and put it in your pocket. Nice.
Roll-up keyboard [Thinkgeek.com]

This one might be useful if you’re in the need to type stuff while doing practical work in tough climates - but if you would wear this keyboard at the office, you might be considered a bit geeky.
The wrist keyboard [l3sys.com]

Things are starting to get a bit more weird, ey? Getting used to this keyboard isn’t something you’ll do in 10 minutes or so - it will take a while for sure. But if you have medical problems with your hands, this might be a good choice since it’s a very ergonomic keyboard. It looks very weird though!
Maltron 3D Ergonomic Keyboard [Maltron.com]

“However, if you have a low tolerance for frustration (and learning to type in a new manner can be frustrating) then your best bet is to stay flat and stick with a keyboard that’s a little more “common”.”
SafeType [store.yahoo.com]

Virtual Laser Keyboard [virtual-laser-keyboard.com]

Frogpad [frogpad.com]

The Twiddler 2 [handykey.com]

The target group for this keyboard is of course people who have limited or no motion in their fingers or hands, and that’s a very good thing - but anyway, it’s a weird keyboard.
Orbitouch Keyless keyboard [Keybowl.com]

The datahand [Datahand.com]

The Tidy Tippist [ToniaWelter.com]
A Keyboard can be dressed


A Keyboard with a phone



A keyboard designed for old people in Japan

A keyboard with OLED screen:




Optimus Keyboard:




Optimus Upravlator Keyboard


2000-DT-TB Keyboard, USD1,200

Source: http://tech.sina.com.cn/h/2006-12-28/12231311324.shtml