African Windscreens are made from two directions of overlapping straw woven together. Long rows take less straw and less time, but are less protective against the wind. Since wind speed increases the higher you are off the ground, the lengths of weaves decrease logarithmically as the height increases. This is an excellent example of logarithmic engineering as distinct from any integer system of calculation.
from a windscreen maker near Bamako, Mali. Courtesy Ron Eglash.
He includes a tutorial to learn windscreen weaving patterns.