An investment of a few dollars saves countless travel bucks!
A collapsible fabric cooler takes basically no room in your luggage, since it flattens when packed. Easy-to-carry coolers have shoulder straps, and some may even double as backpacks. Many coolers store wine upright; half of the top flips up to accommodate the taller bottle. Expensive snack items and beverages bite into travel funds, but one trip to the hotel ice machine and one stop at the local convenience store add up to extra cash. These coolers can turn an ordinary picnic lunch into a wonderful travel memory.
Bonus: you can use it as a dirty clothes hamper at the end of your trip!