lots of patterns for the yellow loom
Jenn's Yarn Addiction: Loom Knit Headband - free pattern
Used a paper towel holder to put my yarn and be able to use both ends of the yarn for 2-string loom knitting with no hassle. Effective!
Loom Knit - Gathered Cast Off or Bind Off on a Round KK Loom - good bind off for hats.