Do you enjoy fast food or going into retail shops? Many companies hire mystery shoppers to test the customer service of their stores. A common one is Subway, which hires mystery shoppers to ensure that "Sandwich Artists" are following all the franchise guidelines. If you have time and can travel to different places, this could be a good side hustle.
Become a babysitter if you are good with children. There are websites that will connect you with people who need a babysitter. To get hired by people who do not know you, it will help to pass a CPR class, or to have a special talent or expertise for entertaining children. However, you might be able to make money more quickly just by babysitting for people you know, or by having friends refer you to others who need a babysitter.
We all wish we could be wealthy. For most of us, it's a far-off dream that someday, eventually, we might be able to turn ourselves into self-made millionaires. But the truth is, building wealth isn't about putting all your hopes into "someday." You're never too old to start building wealth, but if you start when you're young, you have far greater potential to amass a fortune--and more time to let that fortune compound itself as you grow older.