Celebrate of graduation

My nephew is going to graduate for junior hight school this month. He is going to high school from this year.

I was thinking that the gift for celebrate of graduation is money, because he is able to buy anything he likes. But I changed my mind a little bit. I want to send a special thing such as a pass case or a fountain pen because if I send a special thing, when he use it he is remembered me.

But... What should I send? What's kind of thing he likes?