As a Smashwords contributor, I was recently given a free subscription to Scribd. I found a way to sideload the Scribd app on my Kindle and immediately searched for Atari and Nintendo stuff. I was very happy with what I found. There were several collections of Atari 2600 Manuals and several issues of both Nintendo Club and Nintendo Power magazine.
Access to these manuals and magazines is just more of my portable nostalgia. It is bits of my childhood that I can check out and spend a few minutes with anytime I want. If you ate similarly looking for portable nostalgia, I suggest you get the Scribd app and look around. Also, my books ANESthetized and Arcadian are there. Apparently you can get them there for free. If you do, please give me a good review at Amazon.com!