Here's the pattern for my Jitterbug scarf:
1 skein of Colinette Jitterbug; pair of 3.75mm (US 5) needles
Cast on 34 sts.
Rows 1 & 2: Knit.
Row 3: K6, P2, *K2, P2; rep from * to last 6 sts, K6.
Row 4: K4, P2, *K2, P2; rep from * to last 4 sts, K4.
Rep Rows 1-4 for length required, ending with a 4th row. Rep Rows 1 & 2 once more.
Cast (bind) off.