I wanted to make a headband for my babe to cover her ears. I made one for myself using the Drops Headband pattern. I used that pattern as inspiration for the baby headband. It’s a very quick knit. I don’t know exactly how much yarn you need, because I was using leftover yarn from another project. You won’t need too much. A 50 gram ball of worsted weight would be plenty, but I don’t know if you can get worsted weight in a 50 gram ball.