THE SMALL PLATOONS.

My mom has told stories of knitting onesies for Britain in the early 1940s.  That was a high-school project, they'd receive shipments of purple yarn (it being a war, having pink or blue ones were inconsistent with the spirit of austerity) and make them in various sizes for the infants.

The same sort of thing is at work in contemporary sewing clubs, only these days it's face masks for health professionals.  (The story is a video out of Rockford, there are no embed options, sorry.)

It's like any other war effort, there are shortages, these days of quarter-inch elastic.  I heard a radio report on this phenomenon out of Milwaukee where somebody was suggesting crafters look in their notions box.