Invest in dividend-paying stocks
Buy and hold rental properties
Invest in REITs
Create and sell digital products
Write and publish an e-book
Start a blog with affiliate marketing
Build a YouTube channel with ad revenue
Create an online course
License photos, music, or artwork
Develop a mobile app or software tool
Invest in index funds
Peer-to-peer lending
Rent out unused space or equipment
Sell print-on-demand products
Earn royalties from creative work
Buy and hold bonds
Build a subscription-based membership site
Automate an e-commerce store
Create a niche website
Invest in a business as a silent partner