What should I get my boyfriend for his birthday?

I would say that since you know him, you are probably the best one to answer that.

How would we know? We don't even know his age or the things he likes. You're dating him, right? Think about the things he likes and enjoys doing.

I agree with odinn. You know him best. You're the one dating him. I would hope that you would know what he's interested in, what he likes, what he doesn't like. You also know how much you're able to spend. So dig deep, learn more about your boyfriend and come up with a gift he'll like that you can afford.