When you're getting ready for a flight, two main things you might be worried about is how to stuff all your travel essentials into your modest-sized suitcase and how to get through the security screening as fast as possible. Interestingly, both of these things depend on how carefully and thoughtfully you pack your carry-on and checked luggage.  Do you know, for example, that if you don't charge your laptop before the flight, it may be confiscated? Packing an electric brush in your carry-on may land you in trouble at the security check.  Learn more about your ad choices. Visit megaphone.fm/adchoices