For a dad, a personalized gift such as a photo album or a handmade keepsake could be a thoughtful and meaningful gift. Alternatively, a practical gift like a new tool set or a nice watch could also be appreciated. If he's into sports, tickets to a game or a new set of equipment might be the perfect gift. Ultimately, the best gift for your dad will depend on his interests and hobbies, so take some time to think about what he would enjoy most.