Perhaps you have seen enough small keyboard lately, but still none of them has the wireless + backlight combo feature. This Palm sized wireless keyboard from USBFever has it. The keyboard is using Radio Frequency 2.4Ghz wireless technology and you can operate your PC from 10 meters away.
The keyboard has only 56-keys though, but the keys has a backlight so it’s pretty cool for a dark room. this palm-sized keyboard will enter to the power saving mode when it detect no key is pressed. For just $56.99 you can own it.