The first time I solo-traveled internationally was during the summer before college. I was a volunteer on a kibbutz in the north of Israel, where I scrubbed toilets and mopped floors for food, board and — as it turned out — tons of gin-and-tonics. With no credit card to my name, I brought $800 in cash with me. I spent my free time hitchhiking around the country and partying in the local bomb-shelter-turned-pub. So not only did I save most of my $70 monthly stipend, but I also returned with a nice amount of money.