BIRTHDAY GIFT IDEAS ... HELP!!

Okay so my boyfriend is about to turn 18 at the end of March and I have absolutely no clue what to get him. I could really use some help. He's basically like a cowboy he loves all things country, the walking dead, he plays the violin as his main instrument plays a lot more too, and he really enjoys being happy. And I really want to make him happy for his birthday I just don't know what to get him if any of you guys have some ideas please let me know I'm disparate.