Freelancing: Offer your skills and services on platforms like Upwork, Fiverr, or Freelancer. This can include writing, graphic design, programming, virtual assistance, and more.

Online Tutoring: Teach subjects you excel in on platforms like VIPKid, Chegg Tutors, or Tutor.com. You can also offer lessons in languages, music, or other skills.

Sell Handmade Goods: Create and sell handmade items on Etsy or other online marketplaces. This can include crafts, jewelry, artwork, or custom clothing.

Participate in Gig Economy Jobs: Sign up for gig economy jobs like driving for Uber or Lyft, delivering food with DoorDash or UberEats, or completing tasks on TaskRabbit.

Rent Out Space: Rent out a room, your entire home, or even storage space on platforms like Airbnb or Neighbor.

Sell Unused Items: Declutter your home and sell unwanted items on eBay, Facebook Marketplace, or Craigslist.

Investing: Invest in stocks, bonds, or real estate. Consider using robo-advisors like Betterment or Wealthfront for automated investing.

Pet Sitting or Dog Walking: Offer pet sitting or dog walking services through platforms like Rover or Wag.

Online Surveys and Market Research: Participate in online surveys or market research studies on websites like Swagbucks, Survey Junkie, or UserTesting.

Affiliate Marketing and Blogging: Start a blog or YouTube channel and monetize it through affiliate marketing, sponsored posts, or ad revenue.