JustPark allows you to rent out your spare parking space, garage, or driveway. You sign up and can either set a price whenever your spot is available or accept an algorithm which sets the value for you based on the location and market. It is a simple idea which has become a success and can earn you extra cash without lifting a finger.
Google Opinion Rewards won't earn you a fortune, but for the sake of a minute or two here and there, Google is willing to pay you in Play credit to answer surveys and marketing questions.
Via: Google Play
Airbnb has become a market in itself in recent years. If you don't mind the occasional guest in your home, you have a spare property or you would like to make some money while you are away yourself, you can offer space for sale. Customers often enjoy it as a different experience than a hotel, and owners can earn some serious money by signing up.
Calling itself the "Airbnb of Storage," Neiybor is a handy app for those willing to make some extra money by letting others use space which is going to waste. The app allows you to find self-storage available locally and for less than traditional outlets.