Also for anyone interested, the pattern for my headband is here:
http://www.ravelry.com/patterns/library/crochet-calorimetry
The yarn used for it is lionbrand 'amazing' and the colorway is Mauna Loa. Here's a link to all the yarn swatches in case anyone is curious:
http://www.lionbrand.com/yarns/amazing.html
It's mostly wool and works up really soft and cozy. I've used it in tams before, but my dreads are long enough and so heavy now that most tams won't stay on my head. I still use them to sleep in sometimes, but it's mostly a futile effort.
love the thickness in the last update. Have to say though, seeing how slowly dreads do actually grow makes me realise just how incredibly long it'll be to have dreads that have decent length.
