What should I get my dad for his birthday?

I would definitely buy him a fishing gear with a fishing pole if possible. My other suggestion is if you have any great photos of Hilary then you can make a great poster of Hilary. You know, like a "bring back memories" poster. Do that and give him the poster along with any gift you have for him. Of course it's not the money that counts but it is the time and thought you put into it that counts.