I didn't have a drill, so I had to make my own. First I heated a long nail in the fire, then drove it through a half a maize cob, creating a handle. I placed the nail back on the coals until it became red hot, then used it to bore holes into both sets of plastic blades.
William Kamkwamba, The Boy Who Harnessed the Wind: Creating Currents of Electricity and Hope
engineering, makers, poverty, resourcefulness, tools