Green and silver are the colors of Slytherin house, and you'll need to show them off on Draco's tie, scarf and robe. Start out with a green tie. Use silver enamel paint that you would use to paint ...

and Slytherin (CC) Cast on 60 stitches in main color (MC) and join in the round. Continue knitting in the round with MC for 20 rows. Repeat from * to ** until the scarf is the desired length.