On the average, millionaires have 7 sources of passive income. Share your streams of passive income as this may help a reader build more wealth.
You don't need 7 sources, if one works well for you. I have been doing freelancing since 2004. I have tried more than a dozen methods - blog advertising, forum posting, YouTube video creation, affiliate marketing.etc. But since 2013, my only source of passive income has been signature campaigns in this forum. The payout is not very high, but I have a full-time job and therefore can't work additionally for more than 1-2 hours a day.