Extreme sports are one of the best ways to get young people of the street. Especially skateboarding is a very popular and easy to setup sport. Israel Dejene is the founder of a cool skateboard project from Ethiopia which you should see!
Uganda is land-locked country in East Africa with a wide variety of wildlife and nature. In 2010 Uganda had 33,425,000 inhabitants, 10,000 of them are street kids who have to beg and live under filthy conditions in urban areas. To help those kids the Breakdance Project Uganda was founded.
A friend of mine started a project called »PATCH Project«. The project is a collection of open-source prostheses for children in developing countries.