Designing Logos, Website, Mobile App.

You can earn money designing logos, website, mobile app, T-shirt, Postcard, flyer, business card etc. It is called "Crowdsourcing" a process that involves outsourcing tasks to a distributed group of people. This process can occur both online and offline, and the difference between crowdsourcing and ordinary outsourcing is that a task or problem is outsourced to an undefined public rather than a specific body, such as paid employees.

Here are some website that offer crowdsourcing, designcrowd.com , 99designs.com, threadless.com