Fleece scarves in a variety of colors would be quick and easy.
Someone posted recently on how to do a neck scarf, sewing the ends together twisted so that it is a cowl you can pull up over your nose or head if desired, or just draped around your neck.
My daughter made me a long narrow scarf out of fleece years ago, and I still use it. It simply required cutting a length of fleece and then cutting fringe on each end.