Find what you love to do and explore options in that area
Write hub Articles and promote products
Do the things other people hate to do or do not have time with - For instance, do you like filing, are you an organizer? bookkeeping? online marketing? Can you start a dog-walking business in your neighborhood or nearby area? Paint numbers on home sidewalks and curves? Pick up dog poop in people's yards or local businesses from their pets? Newspaper route, . . .
The best way to earn an extra dollar - legally - is to search yourself for things you are willing to do and enjoy and look to your imagination for creative ways to go about doing that thing.
Do you love art and have room in your home for an art studio for kids you could charge a monthly fee to join? Your only limit is you. Can you teach a foreign language or music lessons or singing lessons? Can you create budgets for personal and business needs -
Can you teach people how to find keywords?
I could go on and on . . . . and on - Your turn! ;-)