Valentine day gift 💘🤔

My 15 year old brother wants to get something nice for his girl friend. He asked for my help and of course I was excited to try and help him come up with something perfect. When I asked what was her favorite color, food, movie - she apparently doesn't have one of either of those things. I went on to say "What? Man she sounds difficult." And he said "Not if you understand her. The way you understand lee." (Lee is my SO.) 😭 My brother is so 😭. Anyway we need some help trying to get her something nice. I took it to pinterest but nothing caught his attention. And she doesn't like makeup either so :( Any suggestions?