Efficiency in computing project/Brainstorming

A device... lcd/quasi epaper (glare free) on one side

solar panel on other

...

wifi...

memory...

usb... maybe..

processor...

power on off button...

speaker...

camera...

weather resistant..

microphone...

linux...

blue tooth..

accelerometers..

gps

hmmm... ... ... .. . .

.

light - thin - maybe ~8 x ~6 x =<.25

durable>