Cut your scrap fabric to measure 4” wide by 18” long.
Fold the fabric in half width wise with RIGHT sides together through the elastic band.
Using a sewing machine set to single needle stitch, sew along the cut edge with a 1/4” seam allowance, sandwiching the elastic band inside.
Start sewing 1” from the end and continue until you’re 1” from the end.
Turn the fabric RIGHT side out, with elastic encased inside.
Match the short ends with RIGHT sides of the fabric together. Sew the ends together with a ¼” seam allowance making sure to keep the elastic band away from the sewing needle.
Tuck the seam allowance inside and scrunchie will be formed.
To finish, fold the ends of the 1.5” gap inside and sew the hole closed along the edge.