Blaise Zabini
Blaise went as the Warlock, which consisted in him in his normal (expensive) clothes and a piece of string, about 15cm, on each sleeve. One string was attached to parchment charmed to a human heart (general shape with aorta sorta sticking out, not overly detailed, like he didn't bother to try making it pulsing or anything). The other was attached to parchment charmed to look like the hairy one (that wasn't overly detailed either). #effort