What should I ask for for my sweet 16?

My birthday is in December so I have a couple months left to think about it, but because Christmas is near it too I have to make a bigger list. I'll be honest, I'm a picky, only-child, teenage girl and generally get what I ask for, within reason, as long as I keep straight A's and behave. Over the years it's been harder and harder to think of what I want. My mom keeps bugging me about having a big party or going somewhere, but I have only a few friends and rather just go out to eat. I got a Mazda RX-8 a few months ago and my room is too small to do anything better with it than it already is. I pretty much have anything I would need or want, the only things I can think of asking for is an IPhone kit for the car and Sims 4, maybe some floor mats for the car (but the exterior is grey and the interior is orange & black so I can't find anything cute that matches, plus it kind of has a 'beach theme'). I always get a million gift cards and don't really want any because I hardly use them and then they are just a cluttered mess of wasted money in my purse. What are some good ideas that wouldn't cost too much and that I would actually use other than a bunch of gift cards? *Just keep in mind that I'm not the 'girly-type', but more of the 'nerdy, gaming, doodling, head stuck in a book-type'*

How about a kindle? The one I have is the Kindle Paperwhite. It's back lit, so you can read in the dark. It's about $120.

You could maybe get something personalized from a store like this…

http://www.zazzle.com/rusticharbor*

It's all original type stuff so it's really unique!