Summer is already underway, which means most people have vacations and weekend getaways on their minds. Every trip begins with a packing session, which isn't the most exciting aspect of your vacation, but it is crucial. For starters, you'll want to bring everything you'll need for a big getaway without taking up a bunch of space in your luggage. After all, there's a chance you'll want to do a little shopping and bring back souvenirs to remind you of your trip. Secondly, many airlines will charge (quite a bit) for…