Over the years, the Kindle has hewed closer and closer to Dieter Rams's 10 principles of good design with every iteration.
No gadget gives me as much pleasure to pick up as my Kindle Paperwhite. I'm hard pressed to think of a device that is better designed to do one thing well: read digital books. But what makes the Kindle unique to me as a product is that it is one of the few modern devices that has used the ideals of simplicity to improve with each iteration.