Crochet pattern to create a hat, scarf and collar. A basic knowledge of crochet is required to make them. The hat, scarf and neck warmer are easy and quick to make. You only use single crochet stitches (US) or double crochet stitches (UK). The Hat & Neck Warmer you can make in one to one and a half hour. The Scarf takes about 2 hours.