As an auntie, I can say that anything, no matter how low budget, will make her feel great. A lot of aunt - niece/nephew interaction is mostly about giving. Which if fine, we aunts love our nieces and nephews and we don't give because we are expecting anything in return
. But any thoughtfulness in return melts our hearts
. It's all about being thought of, nothing to do with the money. Just a handwritten thank you note and maybe a printed photo would be very nice.