Top 10 Knitted Headband Designs (most of these could be adapted to crochet)
Gray Cable Neckwarmer, pattern is not available anymore so purely for inspiration
Knits and purls ~~ avercheva.
Driving tracery t
Gray Cable Knitted Headband Ear Warmer Grey by ThreeBirdNest
Le point noisettes au crochet, tutorial in French by petite sitelle.