MaxPoint just released a new wireless keyboard, the KeySonic KSK-3200 RF. This guy measures 293.5mm x 28mm x 101mm and uses X-Type membrane technology for super silent key strokes. So you can type like a ninja, silent and deadly. Well, maybe not so deadly, but still silent.
Some other features include 2.4GHz RF that works from up to 10 meters away, a built-in opto-mechanical trackball with two mouse buttons, status LEDs and it runs on two AAA batteries. The KeySonic KSK-3200 RF will cost you about $74.