With all the new airport guidelines in place for luggage, it can be frustrating to spend hours painstakingly packing your toiletries into mini bottles, only to find them burst open in the bottom of your carry-on luggage or suitcase. The next time you fly, put a little piece of plastic wrap over each of your bottles before you screw the lid on. Even if a lid pops of en route, the screwed-in plastic wrap will minimize spills.