Knitted yarn blanks are great for socks, wrist warmers, mittens, gloves, scarves, a shawl, etc., simply pull the end of the yarn and allow the blank to unravel as you work, alternatively, you can wind it into a ball to work from, depending on which end you'd prefer to start with.
It is normal for yarn from blanks to have a heathered look when unravelled and knitted or crocheted into a garment, due to the way the dye penetrates the knitted yarn.
