Of course, your dad might just want a practical gift. If your dad has a hellish morning drive to work, he’ll actually non-ironically appreciate this heated thermos that maintains whatever temperature he’d desire that he can plug in straight to his car. Sure you’ll increase his chance of scalding his lap when he jams on the breaks on the highway, but at least he’ll never have to suffer cold coffee!
And, of course, if you don’t feel like getting your dad something coffee related, we don’t know, you can make him some arts and crafts shit. He won’t actually like it, but he’ll appreciate the effort.