Materials: Two balls (skeins) of chunky yarn in pure wool, alpaca, or merino wool, and a short, round knitting needle. “The trick is to make a knitting swatch with the yarn you have. Cast on 14 stitches, and knit back and forth in a rib, meaning you knit one, and purl one. The amount of stitches you have on 10 centimeters, you cast on four times. So if there are 12 stitches on 10 centimeters, cast on 12 x 4 = 48 stitches. Then the width of your beanie will be 40 centimeters. It will give in a little, in use. If you feel like that’s too small, just cast on a few extra stitches next time. Give the smaller version to your kid or your friend’s kids!