Take him to the movies or someplace he wants to go! You don't need to give him gifts. Show him in your actions how much you care for him. Be there when he needs someone ! Just show him and let him feel about how much you appreciate him. Spend some time with him and be happy! He'll know how you feel!
Guys like it when you enable their hobbys. If he likes to work on cars, the two of you can go shopping for that "special tool" he needs to complete the project. If he likes to golf, the two of you can spend the afternoon shooting 9 or 18.
As a brother I can say that a hug for nothing more than being a brother is all I need. Hug him and when he says" what's that for." Say just that. We don't want or require gifts or anything else. Knowing my sister acknowledges me as a man in her life is priceless.