This hat is a stash buster (aka it gobbles up your scraps like “nom nom nom!”). It has two main colors, of which you’ll need about 50 yards apiece. Other than that, you need simply scraps of any worsted- or dk-weight yarn you’d like (or small stuff, held with two strands together). To knit it, you’ll need roughly 150 yards of yarn in total, as well as a set of US 7 needles.