There is monster cereal all over this one. All over. That just seems fitting, right? Crushed monster cereal for the gravel. Monster cereal marshmallows for the eyes (that always watch, they always watch). Monster cereal roof. My actual house has been invaded by monster cereal. And bonus for this haunted house made from cereal, frosting and a cereal box? You can put an electric candle inside for a spooky glow through the candy windows.