A Treehouse is a great way to add an extra bedroom to your home, and for a frugal opportunist, a great alternative living situation to facilitate saving and investing goals. I'm always looking for ways to save money, and staying in my friend Lily's treehouse was such a cool experience and a great way to save on a place to stay. This is just a quick peak at what our little set up looked like staying there for only a few nights. I hope this gives someone inspiration for an alternative living situation!