Since Joe Biden took office, well-wishers have sent him mountains of books, blankets, masks, a cheetah print necktie, and so many dog toys (including a Nerf gun designed for playing fetch).

With the help of sewing machines, scissors and some hand braiding techniques, 16-year-old besties Olivia Liu and Sophia Liu are doing their part to chip away at the 92 million tons of global textile ...