Acrylic: The Cheapest Yarn Ever

It is made with synthetic fibers, but is the most cost effective yarn on the market. There are plenty of different fibers that are not that expensive to knit, crochet, or do any type of fiber work with. None of them are as inexpensive as acrylic.

This is the yarn for people who are unable to wear fibers like wool due to lanolin allergies or overwarmth issues. Acrylics are used for a variety of things like scarves, hats, mittens, blankets, and more. 

Make sure to check out all kinds of yarn and choose the one that is best for you, your project, and your budget.