Girlfriend Birthday gift!!! need suggestions!?

My girlfriend of 2 years is turning 19 at the end of July and i have a budget of $200-$350 i was thinking of getting her a Nintendo 3DS because she said she wanted one, but i feel it'll get outdated eventually, because i bought her a iPod shuffle before and she doesn't use it since she got an iPod nano :(, maybe it was just because it was a shuffle? i don't know, but any suggestions between that budget would be appreciated. and she got me $150 worth of presents for my birthday, she got me every single thing i wanted so i want to do the same because i love her :)