Be a Girl Scout when traveling, arm you’re Carry on with food and necessities:

When on the road I tend to bring everything I think I might need in this day of airport charges, inflated expenses and just plain undesirable food. Instead of a travel pillow I roll up my jacket, I bring a large pushma type scarf to use as a blanket and accessory because I tend to get cold on the plane. I always have a magazine, small notebook and pen, entertainment such as an iPod, headphones (preferably noise-canceling ones) empty small water bottle I can fill when I get through security and food or snacks.

Snacks I like to bring:
Carrots or celery
Trail mix
Cheez-its
Sesame sticks
Sliced apples
Fig Newton’s
Nuts
Pretzels
Chex party mix
Cheese and crackers
String cheese
M&M’s
Cookie
Granola bar
Grapes
Beef jerky
Drinks:
On the go enhanced drink packets you add to a water bottle
Ice tea mix packet
Lemonade packet