You know your foster brother at school. I believe he must be very good to you. He must help you and enlighten you in many things. This kind of relationship is similar to that of family. I recommend you several gifts that boys like.
1. As a sister, what you want to hear most on your foster brother’s birthday is a happy birthday blessing. I recommend you an inner-carved crystal ornament with a happy birthday blessing. It has a very three-dimensional picture and very sincere blessings. It is a very suitable birthday gift.
2. Boys in college like to play games with laptops. Laptop heat dissipation is a big problem. I recommend you to give him a laptop exhaust fan as a gift. Such a gift is affordable and practical. Your foster brother must need it very much.
A lightning dog-shaped speaker with a USB interface is very suitable as a gift for boys. Boys generally like animals such as dogs. In addition, this is an electronic product. It can play songs and movies when plugged into a computer. It is a very creative gift.