Sorry I'm late on this...ok so Ritual. I know we were originally debating the whole Boogeyman idea. That got me thinking about Rituals in the American tradition, specifically when dealing with kids. Anyone seen Escape From Tommorow? It's an indie horror flick about a Disney trip gone way, way wrong. Worth a rental if you're bored and in the B-movie horror mood. Obviously I don't think anything dealing with Disney would be an option when it comes to an HHN house (2008's ScaryTales aside), but the idea of the indoctrination of children into American pop culture in different ways, like going to Disney for the first time or being plagued by the "Boogeyman", is intriguing. I'm not even sure where I'm going with this spec...
Also, sacrifices usually play pivotal roles in Rituals...sometimes lives of babies or children, or just "blood of the innocent" in general is required. This "Boogeyman" collects children for a sacrifice to be used in a Ritual....
Ok that's as far as I've gotten
EDIT: Fun Fact: There was a film released in 1977 named "The Creepers" whose original working title was "Rituals". IMDB Synopsis: "Five doctors on a wilderness outing are stalked by disfigured, crazed killers."