Clamp Wheel

A travois is a device that traditionally uses crossed teepee poles with canvas stretched across them, which people can drag behind them to carry anything from cargo to children. I read about a 13-year-old who is inventing an updated version to help famine victims carry their children and supplies on the long and treks to refugee camps.
My idea would be to combine a C-Clamp and Wheel. Anyone could print and clamp the wheel to a travois or any other object that they need to move. This was my first attempt to create something to be 3d printed.

I modified the c clamp created by maybeso83
http://sketchup.google.com/3dwarehouse/details?mid=3c46c63a23c3cb60247fab805ccf3701&prevstart=0