Easy knit: stripy phone sock

While you’re digging out those long johns and strapping a hot water bottle to your chest, pause for a moment to consider that other extremity you may overlooked; your mobile phone.  It’s a little known fact that each winter, hundreds of telephones fall victim to frostbite after being exposed to the elements.  Let’s put an end to this atrocity now.  Knit a cosy for your mobile and put your mind at rest.  (This is also one of the speediest, last-minute knit gifts known to mankind. Fact.) 

You will need a pair of knitting needles – 4.mm would be best, DK yarn in two different colours and a good sturdy sewing needle with a sizable eye.  A trusty pair of scissors is required, too. 
Cast on 30 stitches with your first shade. 
Row 1  Knit.
Row 2 Knit
Row 3 Purl
Row 4 With your second shade, knit.
Row 5 Purl.
Row 6 Change back to first shade, knit. 
Row 7 Purl.
Repeat Rows 4-7 a total of six times. You should have 31 rows. 
Cast off!  Leave a long tail of yarn at the end.  Thread your needle onto this yarn and sew along the bottom and up the long side on the inside (wrong side) of the cosy. 
Tie off the ends and weave in the loose strands.  Turn the right way round and your cosy is complete!