Join The Bronze & Dark Blue Hogwarts is broken up into distinct houses. While Harry and many of his friends are from House Gryffindor, many people are drawn to the mystery and majesty of House Ravenclaw. Originally founded by Rowena Ravenclaw it is represented with this colorful scarf. The Ravenclaw Scarf For Cosplay & Halloween This house Ravenclaw scarf is the perfect prop to complete a Hogwarts cosplay costume. Though it is also functionally warm and suitable for trick or treating on cool Halloween nights.