The Water is Wide
This scarf pattern includes several different variations, all completely reversible:
1) Cabled waves on one side, quilted gull stitch rib on the other. Shown in lavender-ish Malabrigo Silky Merino.
2) "Wings to Fly": Quilted gull stitch rib on both sides. Shown in rainbow striped colors of Noro Kureyon and Plymouth Boku.
3) "Sailing the Sea": Wave cables on both sides.
And 3a), shown in the photos in blue Malabrigo Merino Worsted, is the Sailing the Sea variation, but worked with a keyhole fastening instead of as a plain flat scarf--this uses less yardage than a full scarf would, and holds the scarf securely in place around your neck.
Inspired by a traditional folksong by the same name:
The water is wide, I can't cross over
And neither do I have wings to fly
Give me a boat that can carry two
And both shall row, my love and I
You can (for the moment, at least) find a [video] of the version I know on YouTube.
The pattern is available for sale via Ravelry PDF down