I'm loving this Spice Shop yarn from Premier Yarns that I found at AC Moore, it is inexpensive and works up beautifully. It has 41% cotton which I love. Comes in many variegated color schemes.
Used the simple pattern below to make this chunky cowl/infinity scarf:
Pattern: 2 Skeins, size N hook
Row 1: chain 2, half double crochet into every other chain space with a chain 1 in between, (hdc, ch1, hdc, ch1...), at end of row turn
Row 2: chain 2, half double crochet in chain space of row 1, chain 1, repeat hdc, ch1 for entire row (be sure to hdc in very last chain space), at end of row turn.
Complete 15 rows, use yarn needle to weave/stitch ends together into infinity circle.