It may be renting out a room to someone in need, putting a room on Airbnb, renting out your car or different property, or selling useless stuff around your house that is just taking on area and collecting dust. This is an avenue of creating a passive earnings that consists of basically making a product that will go on to make you cash sooner or later. It can be creating a website, writing a guide, creating software, or arising with a great idea for a t-shirt.