The Bill and Melinda Gates Foundation offers $100,000 for projects that...
From wheelbarrel to go-kart, yard work has never been so much fun.
Very cool quad but, wait for it...
I wish I could build cool stuff like this.
Time to replace every single window in the house.
Some kids make a pretty cool waterslide off their roof.
Now if it only gave you 5 cents for every can...
I wish I had a homemade hovercraft when I was a kid!
Someone blows up a lake and causes a homemade tsunami. Check out that wave.
You could do some serious damage with this homemade flamethrower!