Chumby, the "squeezable wireless beanbag computer" is an open source consumer device that is in its own category, whatever that is.
It is sort of like a cross between a PDA and a pet. It was invented by hackers for hackers and its functions are determined by the owner according to which “widgets” they download. Among the widgets: alarm-clock, video browser, weather display, Flickr browser, sports scores, gossip, music, games, etc. Chumby invites you to hack and will ship soon for under $200.