毛糸

A ball of yarn, as used to knit a scarf. Color varies across platforms, but often depicted in green, blue, or magenta and shown with an end unraveling. Sometimes depicted with a pair of knitting needles stuck in the ball.

Commonly used for various content concerning knitting and needlework (e.g., sewing, crocheting), clothing and fashion, arts and crafts, cold weather, and cats.