It's written for four yarns (Tosh DK, Schulana Lambswool, Schulana Angora Fashion, and Noro Silk Garden) but you can use more or less, and mix and match any combination of DK/light-worsted-weight-ish yarns. The goal is to mix color, texture, and (to a lesser extent) gauge to get, as one tester called it, kind of a "patchwork hat." Sooo good for using up scraps!
And of course, don't forget the all-4-yarns pompom!
Anyway, here she is on Ravelry
(Those mitts are coming soon! The scarf is Sharona ;-) )