This is my version of the very easy to make crochet scrunchie!
You need to know how to make a slip knot, slip stitch, single crochet, half double and double crochet! No counting stitches, because you can adjust this pattern to fit any hair tie. This project is easy and quick to make, and you can use up your scrap yarn as well (I used 13g of yarn for the scrunchie shown). You can use any type of yarn for this project + the recommended hook size for your yarn. The yarn I used is listed under the materials section of this pattern.
All you need is a hairtie and the yarn + hook of your choice!