Boyfriends birthday

Ok so my boyfriend and I have been dating for a year and 6 months, his birthday is coming up and I have purchased a part of his present ( Guess shirts because he loves guess) I did this for Christmas so I kind of wanted to add something else to it and I have no idea what. He already has watches, wallets, sun glasses, gold/silver chains, earrings.... Basically everything, that's why I'm at a loss