You will need a tapestry/darning needle.

Shades used;
Sirdar Happy Cotton
789 Lippy - 12 balls
780 Treetop - 7 balls
771 Buttercup - 9 balls
783 Squeaky - 8 balls
761 Dolly - 16 balls
775 Liquorice - 1 ball

Most stockings use two colors - one ball of each, but a few do use three colors - one ball of each.