I recently purchased some beautiful yarn spun from raw silk - just enough for a nice scarf and a little extra. With the little extra, I was thinking of knitting a heandband. I thought I might weave in something with a little more elasticity than the silk yarn. Can anyone offer ideas of what I should look for in a headband yarn? Or is this style pretty out-of-date and should I think about making a long thin scarf to tie around my daughter's hair (teenager). Any thoughts or ideas?