George Washington invented a combination plow/seeder/harrow. It plowed, planted and covered the crop all in one motion.
Also, he designed a special barn where you brought in wheat, had pairs of horses run in circles, stomping on it and the grain fell through the slatted floor for collection. They have it reconstructed at Mt. Vernon.
These are a few of the underreported qualities of Washington included in my book Farmer George Plants a Nation (written by Peggy Thomas, illustrated by Layne Johnson).