Normally I chose the project with great interest and success. For example if the project is listed in exchanges and they have strong team. I buy their token and put it on staking. Passive income is another way to earn income specially at this pandemic where we really need money to provide our daily needs. For example Banana and pancakeswap tokens I bought a little and stake them.
To succeed and get passive income of course we have to dare to take risks, unfortunately to know whether the project we are following is good or not is very difficult, scam projects do the same thing as real projects, the easiest way is we spread our money to buy lots of cheap coins and hold for at least a year.