Carina Spencer Patterns - Farro Hat is a similar pattern: hats and more garment, for all ages, and worsted (19-20 sts/4 in) yarn gauge. You may also like Knitterella Patterns Knitterella Patterns - Saugerties Hat, which is another similar pattern: 16 (4 sts. / inch) finished gauge, hats and more garment, and worsted (19-20 sts/4 in) yarn gauge.
You may enjoy taking a look at the Blue Sky Fibers Woolstok 21 Color Slouch Hat, Blue Sky Fibers Suri Merino Pangolin Cowl, Blue Sky Fibers Techno La Luna Cowl, and Blue Sky Fibers Bulky Frosty Cowl kits all using Blue Sky Fibers Traveler's Series Patterns.
Hopefully our suggested yarn options for Tri Button Cowl can help you come up with your next exciting new project idea!