What's a nice gift to buy for your husband's birthday?

I am answering from a husband's perspective :) I would love a gift that can be useful/fun. Btw, what is your budget? -> If he likes reading then you can buy kindle. -> If he likes music then buy him nice set of bluetooth speakers/headphones. -> If he enjoys games, then x-box/playstation (I think I might get killed for making this suggestion :D) Bottom line is go for a nice electronic gadget that he can enjoy and make full use of.