St. Patrick's Day:
Guests arrive inside of a fairy cave, which is covered in snakes and bloodstained mushrooms formed in fairy circles as a pot of gold sits nearby. Snakes (one of them wearing a leprechaun hat) lunge out of holes at the guests as they pass through, trying to bite anyone that comes near them.
See original music for this holiday by Sue Suhyun Kim here: https://soundcloud.com/suhyun-kim-932755037/holidays-of-horror-st-patricks-day
And read about the other holidays and their music at: https://www.myusemuse.com/holidaysofhorror