Websites like Airbnb not only let you save money by avoiding stays at hotels, but they also allow you to rent out your place when you go on a long vacation. If you're taking more than two weeks off, think about offering your cozy space to other travelers. You get to approve and control who stays at your place and make some extra money while you're traveling. If renting out to strangers is not your ideal option, ask your friends and family if they know anyone who needs a place to stay.
Source: Flickr user erikau