Like, you can be wearing the nicest of tuxedo pants with the nicest of button-down shirts, but adding just the right hat or scarf magically turns it into a casual outfit.
"Unconventional accessories are always a good pick" is playing with fire, as is recommending tuxedo pants, a button down, and a hat or scarf.
Have you seen what nerds do when told it's okay to wear hats?
But when I'm travelling overseas, it gets a much more positive and inquisitive reaction. Many times people have used the hat as an ice-breaker to start an interesting conversation with me. And if you're the only person with a hat in a group, it can be helpful branding so people recognize & remember you.