I'd pick up either an older model PPC, like the Toshiba e400/405 that I own, or a T5 (more expensive, and new models that might fit him better are surely coming out soon).
But the real problem might be getting the text. There is no officially licensed ebook text with the Tolkien novels available, so he'll need to either scan it himself or find a bootleg copy, which is not exactly recommended. If he does that, he would probably at least want to buy a hardcopy book edition if he wants to keep things remotely legit.
|