You can drive for Uber, walk dogs on Wag, tutor over Skype, or even sling cocktails at night. There are a million different ways people are making money through their side hustles, but all of them seem like such a hassle. So, before you get roped into babysitting your neighbor’s kid, take a look at Citi's Double Cash Card. You earn 1% cash back when you buy and 1% as you pay, making it one of the easiest hustles to date.