The Unwired View recently featured this apparently disposable bracelet phone concept by Yanko Design.
The device, meant for the pre-paid market, is light on features, only having a 2-column 14-key keypad and a small screen to handle text. It however rolls out to a large phone that will not have any problem reaching from your mouth to your ear, and will also answer your mp3-playing needs also.
When some-one brings this to the market with a lovely flexible OLED screen and my favourite OS, I will be first in line.
Read more at the Unwired View here.