Good birthday present for my dad's 47th birthday?

We aren't doing anything big....just a little dinner at my parents house with my husband, sister, sister's boyfriend, mom and dad. I don't know what to get my dad! I want it to be something meaningful...I got him a Sammy Hagar cd (he wanted one) but I need something else to go with it. My dad is a very simple, quiet man...he has a car-detailing business. My sister is getting him a hoodie from her work place (she works at a car-part company) I was thinking about getting a baseball cap (solid color) with his detailing business' name on it. What do you think? It's tomorrow by the way!