Wu Yulu, a Chinese farmer, has spent most of his life constructing robots out of materials available to him. His favorite robot is "30 Second Son" (named for its battery operating time).
(Wu Yulu Thirty Second Son robot video)
I'm not sure what Wu Yulu's other children have done (or failed to do) to deserve this. However, the robot is also capable of (canned) speech, saying "I'm a rickshaw-pulling robot. Wu Yulu is my Dad, I take him out about town."
Are there any robots that you love more than your own children?
Mashambas Skyscraper Farm Design Wins
'...a towering eighty-story structure like the office In-and Out baskets stacked up to the sky.' - Poh and Kornbluth, 1952.
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Centipede Robots Down On The Farm
'...the walking mills of Puffy Products began to tread delicately on their centipede legs across the wheat fields of Kansas.'