Every year on the last day of the year, most people in Iralas (in the Northern Realms, at least) come together to celebrate Candlenights; a festival of lights and sharing gifts.
A central figure in these festivities is known as the Star King; a jolly figure that is said to know whether children have behaved well, and rewarding them with gifts if they did. The legend has it that he delivers these gifts through fire, be it a candle, hearth of bonfire.
The exact nature of the Star King is unknown; some speculate him to be a kind fae of the Winter Court.