The last time the U.S. economy really hit the skids these flour sacks were doubly useful!
"The Roaring Twenties, a period marked by a lack of inhibitions and decadent consumerism, saw American culture flourish. The government’s interference in business was low at this point due to a laissez-faire mindset.
"But this was a dangerous game, and when compared to the following decade, the contrast is striking. After the Great Depression of 1929, households were left to fend for themselves, resulting in a “Do it Yourself” mentality. …
"This wasn’t the first-time flour bags were reused. Cotton fabrics were repurposed into sacks that farmers would tie to their horses to transport grains to be processed. Tablecloths, diapers, and other home items were also made from the bags by seamstresses. Why spend money on cotton when you already have some lying around?
"Soon after, flour manufacturers began to notice the growing trend among the general public. They recognized a chance to profit from this new trend. Various companies started printing attractive patterns and designs on the bags to appeal to people of various ages, genders, and interests. Companies didn’t stop at merely printing attractive graphics on the sacks; they also supplied instructions."
https://www.historicmysteries.com/history/flour-bags/24620/