This morning while getting off the train, I found that my replacement Dashing handwarmer had started laddering! Oh Noes! Apparently, during a cable twist, I must have dropped and stitch and never noticed.
I had been wearing the glove for about a week now, and never noticed the slow progression of the dropped stitch. So, I grabbed my crochet hook out of my bag (it permanently lives in one of the built in pen pouches), and started to bring the ladder back up. But, then what? I didn't have any of the same yarn to catch it, then weave in the ends, so I opted for the next best thing.
Once I got to the top of the ladder, I relooped the last stitch through the previous row several times to give it a nice firm knot. Then used a bit of spit to felt the knot between my fingers. From the right side, you can't even tell there's anything wrong.