Good gifts are ultimately personal, so it's hard to give general advice. For guys who wear dress shirts to work, a set of metal collar stays can be a great inexpensive gift if they don't have some already. Household items like Dryer Balls can be nice. Things that aren't necessities but add convenience can be good gifts--something like a Chromecast or an Echo Dot. Ultimately, though, it really depends on what the person is into.