I had an idea if anyone else would like to use it. Hermione finds something that brings a person back after being killed at peak health with any missing parts restored/replaced. She tricks a death eater into beheading her and taking it as a trophy. She uses a different bit of magic to spy on their meetings through said trophy. Only to find out during long boring meetings they pass the head around. So when she attempts to look and listen in she's likely to experience a facefull of crotch and a dick down her neckhole.