This is an example of passive income that isn't quite as passive as it may seem. Yes, if you own one or more homes or apartments you can collect regular rent checks from your tenants. But in exchange for that, you need to keep the properties in good working order, along with insuring and paying taxes on them. You may need to chase down rent checks from some tenants, too, and you may have several months without rent checks when you're between tenants.
Do your friends look to you for advice on things you're passionate about, such as which car to buy, how to repair appliances or how to make a killer cheesecake? Whatever your area of expertise, if you are also a seasoned writer with an infectious enthusiasm for a particular topic, consider becoming an online expert guide. Guides are freelancers with an ability to communicate well and good grammar and spelling skills.
Websites like Survey Junkie will pay you a decent chunk of change for the low-maintenance, borderline mindless task of completing surveys. Companies want to understand consumers better, and one way they do that is by compensating survey-takers (a.k.a. you). Most surveys pay between $0.50 and $1.25, and many of them take less than 5 minutes to do. You can read our full Survey Junkie review for more info.