I just read about this product called Popslate. It was funded on Indiegogo. It is an iPhone 5 case with a 4-inch e-ink screen. Theoretically, it could display notifications from various services in black and white (perhaps with IFTTT as a go-between). The product is expected to sell for $99. This is a really interesting concept when it comes to reading and conserving power, though I’m not sure how else. Check out the video below.