Gift for a 13 year old boy?

I wrote a question earlier this week for ideas for a 9 year old girl, now I'm looking for help for her older brother. I got a great response to my last question and am hoping you guys can pull it out the bag again! My boyfriend and I are looking for a really good present for him. He's not into sports or video games, and I don't know what kind of music he's into. Any ideas of a completely original present would be fab. Thank you!!