I believe that your actual answer doesn't matter that much.
These "open" questions are often asked, in my experience, to get you to talk. Unless the content of your answer raises a big red flag, the relevant part will be how you react to it, how you pose your answer, etc. It's a "starter", depending on your answer you might get interesting follow-ups that lead to somewhere interesting, or maybe just move on with the conversation.
Don't try to force it back to your pre-defined talking points, and never push shop talk during social events, like during the meals with the committee. If they steer the conversation that way, sure, but be yourself, with more interests than research/teaching, etc...
Beyond all else, don't overthink it. Nobody solid is going to get discarded over this (again, except red flags), and nobody "unprepared" will get picked because of this. Use your energy to be very sharp on your teaching statement, research ideas, etc. That's what actually makes a difference.