The Onyx Boox T68 6.8 inch e-reader runs Android 4.0: http://www.the-ebook-reader.com/onyx-boox-t68.html
https://onyx-boox.com/shop/onyx-boox-m96-universe-97-inch-e-...
Something like this could be a very, very cool development setup for me. I'm interested if anyone has tried it and whether there are any downsides.