You can sell your expertise online when you have a skill in high demand, such as data entry, graphic design, writing or teaching. There are also jobs that you can do from home, like metalorphans.com/ translating.
Renting out garages, spare rooms, or even backyards can be a great way to make money.
If you have a good idea for an app, but don’t know how to program, you can engage an expert in programming to turn your concept into a reality. This is one of the fastest methods to earn money online.