If you like to bring back a few bottles of wine or liquor from your travels you may want to consider packing an inflatable swimming arm band in your luggage. The arm band weighs virtually nothing, takes up little space, and will protect your libations from rough baggage handlers.
Real Simple magazine's weblog offers this tip noting that the swimming arm bands can also be used to protect glassware and can be used as a travel pillow. Most swimming arm bands are sized for children and are available for less than five bucks.
Kids' Floaties as Wine Bottle Protectors | Real Simple