Awesome birthday gift ideas? Read description!?

So, for my best friend's 13th birthday party she gets to invite 3 of her closest friends to Great Wolf Lodge for the night. As you might know, it's pretty expensive and I feel honored that she would invite me. She's been impossible nice to me since I've moved here and I really want to get her something big and special. Not TOO expensive, but I am willing to spend more than just 20 bucks. She likes bath and body works stuff, and she just started wearing makeup, but she doesn't want to spend all her money on it so she just buys drug store stuff. I was thinking about getting her some makeup from Merle Norman or something. I don't just want to buy a gift card or anything though, something awesome. Thanks! :)