No. 6:
A display add-on for tinyduino, or perhaps arduino in general, that provides a a Liquid Crystal on Silicon (LCoS), field-sequential color, LED illuminated display using a collimating reflector (stolen from wikipedia, it's the tech used in Google Glass's display, very practical for wearables) would be great but probably impossible.
As far as I'm aware, tinyduino is the smallest arduino around, so is well suited to wearables. A wearable-specific screen would be very very good for the platform.
