I got him headphones. He works night shift doing data entry, so he listens to audio books all night. He uses cheap headphones right now, so I got him some nicer ones that should give him better sound quality and last longer.
I haven't decided what DS will get him. Maybe I'll order one of those web comic books he's been asking for. I'm already running over my present budget, so it can't be expensive. DH has a birthday a month after Christmas, so I'm not stressing too much if I can't get everything he wants for Christmas.