Freelancing
Consulting
Selling digital products
Affiliate marketing
Creating online courses
Dropshipping
E-commerce
Print-on-demand
Blogging
YouTube content creation
Podcasting
Social media management
Virtual assistance
Tutoring
Coaching
Stock photography
Selling handmade goods
Renting out property
Renting out a room
Peer-to-peer lending
Dividend investing
Index fund investing
Real estate investing
Flipping items
Reselling thrifted goods
App development
Software as a service
Writing e-books
Licensing music or art
Transcription services
Translation services
Data entry services
Pet sitting
House sitting
Delivery driving
Task-based gig work
Mystery shopping
Participating in paid surveys
Testing websites and apps
Selling unused items
Car sharing
Storage space rental
Equipment rental
Advertising on personal assets
Subscription communities