The Kindle Fire is a really good one. You can get online, watch movies and of course...read books.
I have a Nook and really like it. But I do like the Kindle too.
They are pretty much the same thing. I don't think your parents will have a problem with either of them.
ETA: Get the insurance on it too! My dog chewed my first one...No insurance ='s no new Nook for a long time. Posted via Mobile Device