Harley chewed through the wire of my sister's headphones. Instead of letting her toss them out, I ripped out the wire then crocheted covers for the ear pieces and turned them into one of a kind headphones.
As close as you'll get to a pattern from me:
I just started with a chain that would fit around the ear piece, used a slip stitch so that I could crochet in the round, then fitted it to the ear piece when I was finished.
The headphones used here are "Ear Pollution" by iFrogz
pattern © *FreakieGeekie
If anyone uses this idea to make earmuffs of their own, please link me because I'd like to see what you can do!
Also viewable on Craftster.org