Nine Year Old Birthday Gift Ideas

One of my daughters' birthdays falls on Earth Day and that is right around the corner.  We are probably going to do a tea party at the local cafe for her and several of her friends.  I have no idea what to get her for her birthday yet, probably electronics of some sort. She already has her own mp3 player but I bet she would love to have her own digital camera. I was going to get her a mini amp for her electric guitar but then she went and spent some of her savings on an acoustic guitar instead. 

What do you get an almost nine-year-old who already has a bike, mp3 player, guitars, and a karaoke machine of her own?  I'll think of something.  I always do.