Materials: Can be made in any yarn with appropriate needles but I used a large skein of Bernat Softee Chunkee in Grey Ragg, and size 11/8.0mm needles.

Pattern: Cast on any odd number of stitches - more for a wider scarf, fewer for a more narrow one. For the sample scarf I used 21.
Knit 5 rows for garter st border.
Row 1: K3, p1, *k1b, p1. Rep from * until 3 sts remain, k3.
Row 2: K3, k1b, *p1, k1b. Rep from * until 3 sts remain, k3.
Repeat Rows 1- 2 for pattern until desired length, you are near to running out of yarn, or you are bored :-)
Knit 6 rows, bind off and weave in ends.