What's a nice gift card I could get my sister for her birthday?

I can only spend fifteen bucks, as I"m unemployed and I already got her a small gift in addition, for five bucks. She loves iced coffee, mugs, Winnie the Pooh, movies, and is diabetic so unfortunately can't have a lot of sweets/carbs.

I typically get her Dunkin donuts gift card but I want to try to get a different one.