Sell unused items on marketplaces
Offer freelance services online
Do microtasks on task platforms
Take online surveys
Test websites and apps
Join affiliate marketing programs
Create and sell digital products
Start a blog or niche website
Make videos and monetize them
Offer tutoring or coaching online
Do user research studies
Transcribe audio or captions
Provide virtual assistant services
Manage social media accounts
Write content for clients
Translate documents or content
Do data entry work
Rent out equipment or space
Participate in cashback and reward apps
Refer friends to apps and services