During her pregnancy, Daryl Nicholls, 30, taught herself to crochet before her son, Oakley, arrived. She made him a blanket, some booties, and a matching hat. The hat seemed small, however ...

Callahan was inspired to embark on the project when a friend asked her to crochet hats for 50 backpacks of supplies she wanted to donate to children. “She said, ‘Hey, would you like 50 hats?’ ...