The NanoNote is a tiny handheld housing a lot of power for a small price. It ships running openWRT and sports a full keyboard, 336MHz processor, 32 MB ram, and 2 GB of flash memory. Not bad for $99.

http://hackaday.com/2010/03/28/hacka...march-28-2010/

http://en.qi-hardware.com/wiki/Main_Page