For my daughters scarf, I used Cygnet Seriously Chunky in 'Macaw' and 3 Cygnet DK yarns: 'Royal', 'Cerise'and 'Sunshine'. You could substitute any very chunky yarn and other DK yarns to use in this pattern. The yarns I used were very bright (because the Small Person took a liking to the Macaw yarn), but this would work easily in more subtle colours.
Use a 10mm hook for the chunky yarn, (bur if you crochet quite tightly, it could certainly take a larger hook)
Use a 4.5mm hook for the DK yarn.
In the chunky yarn, Ch 11 with the 10mm hook.
dc in the second ch from hook, dc in each ch to end (9 stitches) ch 1, turn.
*dc in each stitch (9), ch 1, turn* Repeat until scarf measures desired length (I used 3 balls of chunky yarn)
Tie off and weave in ends.
In DK colour 1, Ch 25 with 4.5mm hook
dc in second ch from hook, dc in each ch to end (23 stitches) ch 1, turn.
dc in the next 22 stitches, dc in next stitch changing to colour 2 as shown in photographs below, ch 1, turn.
|To change colour, when you get to the last dc in the row, don't complete the stitch in your current colour. When you have the 2 loops on your hook, attach your next colour to the end of your yarn...|
|...and pull the new colour through the loops to complete the stitch. This means your old colour will not show on the new row.|
dc in each stitch to end (23), ch 1, turn.
dc in next 22 stitches, dc in next stitch changing to colour 3, ch 1, turn.
*dc in each stitch to end (23), ch 1, turn.
dc in next 22 stitches, dc in next stitch changing colour, ch 1, turn.*
Repeat * until you have 4 or 5 repeats of pattern (whichever suits your preference).
Tie off and weave in all ends.
Line the edges of the pockets up with the ends of the scarf and blanket or whip stitch around the lined up edges, leaving the top of the pocket open for cold fingers!
I hope that's nice and clear, but please shout up if not. This is really simple to make. It becomes even more simple if you decide to make the pockets in one colour only, then there's no need to change yarn colours.