Here's a tip I read on Elysse Sewell's website that I liked so much, I am totally doing it next time I'm flying (though it doesn't have anything to do with nervous flying): take a whole fruit (or two)with you on the flight for a snack. Put it in a paper towel, and a ziplock bag. That way, you can have it, clean up and wrap the mess in the paper towel, stuff it in a bag and just toss it in the trash. No fuss.