The sight of a farmer being pulled along in a cart by a walking robot would stop most people in their tracks. However, Mr. Wu Yulu's neighbors on the outskirts of Beijing are used to the spectacle. The 48-year-old has achieved worldwide fame after inventing and building 47 robots in his backyard out of scrap metal. They can perform functions as varied as jumping, painting, drinking, massaging and, of course, pulling carts.
 
He started his unusual hobby in 1986 and has continued ever since, despite taking on huge debts, being sprayed with battery acid, and risking his marriage. But now Mr. Yulu's perseverance has paid off. He has been invited to display more than 30 of his robots during the Shanghai World Expo 2010, where he will promote the practical uses of his robots.
 
The inventor has already received a string of prizes and contracts with universities.
 
8. Homemade Geo Metro Limousine

A brilliant Chinese inventor by the name of Tao Xiangli has come up with an amazing idea of building a submarine using minimum resources and costing a stunning low amount of cash. It took the 34 year old a couple of years' hard work and a little over four grand to get the whole underwater mission complete. His submarine is made up of propellers, electric motors, a periscope, and a depth control tank. The best part is that it cost just about $4,385 to build.
 
10. Homemade Pool Table



When life gives you sticks and dirt, you make ... a homemade pool table! It goes to show that you can't keep a determined pool player down. The photo was taken by Hal Carim near Garoua, Cameroon.