I have started a less-crazy phone cozy.  One of the color knitting techniques I've read about is doing two color stripes in a continuous spiral so there are no row-changes between colors.

My knitting is a little wonky with this cotton yarn.  There are random stretched out rows.  Anyway, it's super easy to do this two color spiral thing:

1) Cast on all your stitches on one of the DPNs.
2) Slide your stitches back to the other end of the needle (just like knit-slide)
3) Knit  across all the stitches you just made with Color 2 starting with the first stitch of Color 1
4) Move all the stitches to DPNs
5) Start stitching Color 1 into the Color 2 stitches

Here  you can see the beginning stitches of both colors.  You can also see how the light blue comes back around from the right and goes from being the bottom row to being the third row (Step 5 above).  That means there's a little jog at the bottom of the work, but I'll take care of that later.

Here's the top where I'm knitting.  You can see that I'm knitting both colors in turn.  From there, I'm going to knit the light blue all the way around, then come back and knit the dark blue around, repeat.

Once I was done with the phone cozy part, I crochet the bottom of the cozy closed.  It's a nice, sturdy, non-stretchable seam that hides the little jog in the 2nd photo.

Still more work, though.  I want to add a zippered pouch!  Which was the part that I goofed on the super-colorful one.  I think I've figured out exactly what to do now, though.