birthday present that's not too expensive, and it's for me?

okayy, so my birthday's coming up and it's a pretty big one, 16, but i'm not having a huge party or anything. my parents are finalizing their divorce and both are kinda short on cash. not really short because my dad's a pretty successful doctor. also, i have a twin. so the birthday's going to be even more expensive. well, dad is getting us both cars, Yaris's and mom wants to get us something we really want too but she doesn't have that much money. my twin got a few jewelry items and a big purse, but i haven't picked anything yet and my birthday's in, like, three days--i know, not much time but i've been so busy and my party's not till february. i kinda have an idea, but my mom's an emotional sort and i don't want to pick something too cheap because she'll think that i'm not telling the truth. here is my idea:

a book by Irving Stone, he's an amazing author but most of his books are out of print, so i thought i could find one on Amazon; the only thing is, i've heard some bad things about the sellers on Amazon and now would be an absolutely terrible time for my mom to get scammed. plus, it would probably be under $10.

any other ideas? i love Green Day, Phantom of the Opera, Lord of the Rings, most books, and my cat:)

thanks in advance!