Fun fur is a type of fluffy yarn used for knitting or crocheting. Synonyms for fun fur include eyelash yarn, faux fur yarn and novelty yarn. These yarns are similar in texture, but vary in appearance and can be used for a variety of projects. Eyelash yarn has a shorter, smoother surface that resembles eyelashes, while faux fur yarn has longer hairs that simulate the texture of animal fur. Novelty yarn can be any type of yarn that has an unusual texture, like boucle or ribbon. Using any of these yarns can add a unique and playful look to any project.