If she has a ton of nail polish with no organizer what about making one? There's tutorials for it all over the net. Or if you want to buy one - I have two of these

http://www.amazon.com/Professional-Polish-Dispay-Holds-Bottles/dp/B004VN31JO/ref=sr_1_1?ie=UTF8&qid=1385137984&sr=8-1&keywords=nail+polish+wall+rack

But those are not as cute as the shelves. Maybe even buy some nail polish to put in it. If she's into it, she'll love ANYTHING nail related. Otherwise, makeup. The Urban Decay Naked palettes are amazing. They have Naked and Naked 2 out right now with rumors of Naked 3 being released. Those are about $50 each.