Don't look at the regular and common things—crypto lending (totally not recommended), crypto mining (99.9% are scams), or any other crypto investment that promises a high return of 100% after some period of time (likely to be Ponzi). Rather take a different approach. If you have a highly desirable skill or any skill at all, find a niche and find people who are progressive in their thinking who are in this niche who need what you have. Instead of making the exchange instead of fiat, receive crypto.

While the above idea is not exactly passive, a typical passive earning strategy is to have a product that people resubscribe to without you doing anything new but they pay in crypto. Creating a software application that they have to make purchases in crypto, a book where they can always come and pay in crypto and others.

There are so many of the non-typical passive earning methods.