Has anyone seen the movie "Clown?" It's directed by Eli Roth. The premise of the movie is fantastic. Man finds clown outfit, man can't remove outfit, this man becomes "clown " Great use of blood and plot.

I thought Clown as pretty fun!
Loved the concept of the Clöyne even if it is pure fantasy. The Clöyne is inspired by the mythical yuletide fiend, Krampus.

I also liked the concept of Joulupukki (The Yule Goat) in Rare Exports. The Joulupukki was originally a pagan tradition.

THIR13EN Ghosts also has a concept I was intrigued with...the "Ocularis Infernum" (Eye of Hell) and the concept of Basileus's Machine designed to open the Ocularis Infernum. The Black Zodiac ghosts are also interesting and creative with supporting archives.
The Black Zodiac is a dark inversion of the normal Zodiac. Like its celestial counterpart, the more eldritch Black Zodiac is divided into twelve arcane signs; unlike its counterpart, these signs represent twelve earthbound ghosts necessary to gain access to the Ocularis Infernum.
The Arcanum is an ancient book that was written in the 15th century by an astrologer/astronomer Basileus while he was under demonic possession. It contains spells for capturing and summoning ghosts, profiles on the thirteen ghosts of The Black Zodiac and blueprints for creating a mansion-like machine with which to open and gain control over the Ocularis Infernum.