You may think these jobs are for high schoolers, but adults aren't restricted from babysitting, housesitting, and petsitting. In fact, you might be able to garner $100-per-night babysitting! I would start offering these services to friends, family members, neighbors, and colleagues, since they would probably rather hire you instead of someone that they've never met.
If you frequently hear about what a nice voice you have, and even if you don't, you might want to look into doing voice-over work. This is a serious career for some people, and you could pursue having it be your career, but that will take considerable effort. Alternatively, at sites such as Fiverr.com, you can offer your services at a reasonable rate per hour, perhaps starting with a low rate until you've gotten some takers.
Are you an animal lover at heart? How about making some extra money just by taking a dog for a walk or boarding a cat for the weekend? You can advertise your own pet-sitting business on social media, put up signs throughout your neighborhood, or use a website like Rover. They let you set your schedule and adjust your fees as you see fit. If you do use Rover, keep in mind that they take a cut of what you make.3
It’s kind of like going the tutoring route, except you’re teaching English with a company like VIPKid (a big favorite of fans in our Ramsey Baby Steps Community on Facebook). Now, if the word teach makes you a little nervous, don’t worry. They’ll handle all the lesson plans and grading for you. But you do need to want to help others learn and be willing to guide a class online. Getting paid while helping others? This one is a win-win!