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Sony Slider TV
The TAV-32FL2 was a concept product from Sony in 2005. It contained a 32 inch Sony Bravia LCD TV in a speaker housing. When listening to music you could slide the speaker up over the screen. It was said to feature surround sound in the compact design.
Fossil Wrist PDA
The Fossil Wrist PDA was announced in 2005. It had a greyscale LCD 160x160 pixel screen with a mini-stylus integrated in the wristband clasp. It touted infra-red and USB connectivity and had 8Mb memory. Fossil claimed that the battery lasted for about 3 or 4 days.
Image: Fashion Product Wiki
Cell-Mate hands free kit
Cell-Mate was announced in 2009. It is headband clip that holds your phone to your head. The makers announced that there were: "no plugs or batteries to worry about, no loss of sound quality due to an aftermarket speaker, no Bluetooth signals to sync, just your phone like you've always known it".
It is certainly a different way to enjoy hands free conversations.
Image: Craziest Gadgets