Other LYKs' suggestions are not bad. The only advice I would give is to pay attention to his likings when you two do things together and that's what I always get my idea of gifts for my wife.
Just for example, for my wife's birthday gifts, the idea came to me one night when we surfing the net together. She was looking at new arrival for L.V. and she just said "This new key holder looks nice." I was like "it was okay." This gave me the idea what to buy her as the birthday gift.
It all depends on his personality I guess. I am not into brand name like LV or Gucci so I would not want my wife to buy me anything from there. Maybe he will like it. However if my wife did buy the belt for me like you did for your bf/hubby, I would be happy.