Invest in bonds. When you purchase a bond, you are purchasing a loan taken out by a company or a government. The bond issuer holds your money (the price you paid for the bond) for a defined period of time. You receive fixed interest payments, usually twice per year until the term of the bond expires. When the bond expires, the bond issuer pays you back the principal.
I used to be wary of Ebates (now called Rakuten) because I thought the cashback didn’t amount to much, but now I love it.  I’m converted!  To earn money through, all you have to do is sign in and then look for your online retailer and shop through the portal.  Then you get cash back in a few days (it says on the website).

How much money do you need to make passive income?