I started this ear warmer from part of a pattern for a shawl I found in an Interweave Crochet magazine. The pattern can be purchased separately in the Ravelry Pattern Store.
It is Solas Caomh by Jodi Euchner. I have to say it isn't easy…mostly post stitches really, but you have to be on the ball to make sure you are getting the right stitches for each row. Lots of ripping out for me until I got the hang of it…and I am still having a little problem here and there.
Worth the effort though! Using Cascade Yarns Heritage Silk (really merino wool with a small bit of silk) in a silver blue color. I really love it! Will try one later on in a heavier weight yarn.