It's my friend's quinceanera... what should i get her!?

i really want tot get her a really amazing gift but i have no idea what to get her. (Don't make it too expensive pleaseee). I want to get her something cool, other than something like a necklace or a gift card. Soo to all of the girls that are teenagers... whats something cool that you would like to get on your 15th birthday?