This is a simple pattern:
Row 1-3: Knit 3 rows
Row 4: K2, (yarn over, knit 2 together) to last sticth, K1
Repeat rows 1-4 until scarf is the desired length
Can't get easier than that!
I knitted two of these in a week - the blue in 8ply yarn, the plum in 14ply