Polar Express is a one shot where the gm keeps looking at the time and being startled, but refuses to rush the players. Somehow the players skipped a conflict scene and the session doesn't run over time. The gm uses a very similar voice for most of the NPCs.

A mysterious and impenetrable fog is moving across the countryside. The only way to combat the fog, to drive it back and clear the air, is to banish it with light from an ancient and forgotten Reghed cantrip. And time is running out. The players must journey to Icewind Dale and find Rudy the Reghed Deer Druid who can guide them through the fog with his magic light to find the answers they seek.

The Santa Clause is about a lvl 20 wizard from the North whose cursed accoutrements doom whomever picks them up to an eternity of slavery living with elves in a frozen wasteland.

Shattered Dreams: The Sugar Plum Faeries are actually evil entities that invade childrens' dreams to steal their joy. The players must defend the child that is their target this holiday season.

Miracle on 34th St. is about a max level Bard impersonating the local patron saint so well that he successfully bluffs the local magistrate into declaring that he is the actual reincarnation of the saint.

A Christmas Carol is about someone who pissed off a necromancer.

Reminds me of [an all-time favorite meme](https://preview.redd.it/thanks-i-hate-the-magic-hat-v0-x1yac5kfr07a1.jpg?width=640&crop=smart&auto=webp&s=b165e9f8dc41abde596d5d9708a2f89049ea53a1).

And that reminds me of [this Lacy Chabert movie.](https://en.wikipedia.org/wiki/Hot_Frosty)

I'm terrible at understanding a lot of DND these days, but greeting cards were originally sent out by a divination wizard. Either to friend or foe, attempting to alter those people's futures. The naughty or nice list grew and the Santa creature somehow evolved, I'll let someone else expand.