What should I get my dad for his birthday?

i always feel like whatever I get my dad he just doesnt like it enough :(. my dad likes playing ps2... and likes the shooting games, and likes to run, play golf, and he LOVES the steelers (BIG fan). i want something unique, something i never got him. yet, i dont want to be spending over $50 for him because i just dont have the money. help!!!!