I seem to find a lot of boarding passes on the ground for flights leaving within the next hour, after security, and no one around (or at least no one looking for anything). What is the best thing to do with these? Take them to the appropriate gate? Is there a desk who might have access to the person's cell phone number? Can gate agents let people through without their boarding pass? I have considered leaving them in case someone retraces their steps, but they are often getting kicked around and rolled over and likely to end up stuck to someone's suitcase.