12. Get paid $$$ whenever airlines lose your bag
According to the aptly-named ImportGuy, and confirmed by several commenters in-the-know, if an airline loses your bag, you can snag clothes, sunglasses, other accoutrements, or whatever the hell you want while the airline finds your bag. Eventually, you'll be reimbursed as long as your bill is under $500, and you keep all your receipts. Free underwear? I've lost suitcases for less, that's for sure.