What gift to get my girlfriend for her birthday?

We've been together 6 months and we are both 20. I've gotten her rings before. But idk what to get her for her bday. My bday was coupe weeks ago and she drew a picture, framed it, and then took me on a very nice picnic. I don't know how to draw and don't have a car to take her anywhere. And fully broke now, barely can afford college food. Any ideas? I was thinking of buying her a book set that she wanna get but I want to do something made from me too. Any ideas?