I really like how this cowl turned out! It looks great with my black coat and is warm and cosy but light and airy at the same time.
It's very easy to make and is done in a couple of hours. You will need about 100 g of super bulky yarn in each color.
Here's what I did:
CO 21 stitches with needles 12 mm. This will give you a cowl 30 cm wide. You can easily change the width by casting on more or less stitches, but always an odd number.
Every row: k2, *yo, k2tog*, k1.
Change color every other row and always pick up the new yarn from behind the yarn you just used.
Knit for about 140 cm. BO with same color you started with. Twist the garment once and sew together. Voila!