Single cell e-ink type components?
Sadly, eInk is pretty difficult to make yourself. I know of nobody who has managed to make their own. LCD is also verging on impossible to home brew. Your only options are to look for an existing LCD that you can buy and use, or use LEDs.

You don't need 30mA for an LED. We have surface mount LEDs here that are annoyingly bright, even at 1mA! You could go down to 0.25mA and still have a perfectly visible display. These LEDs are HSMW-CL25 from Avago Technologies.