Packing Snacks - Food for Flights

Well, not the conventional leftovers. If I am at an airport long enough, and have bought a salad, I often ask for an extra packet of salad dressing. I have never been refused the extra dressing and if I have lots of the previously mentioned carrots, I have even more dipping options. The bonus too is that they are always packaged in 1-2oz servings so if I happen to bring them through airport screening points, they are okay as well.