In this game, you will have someone tell a Christmas story. Give the people listening little candies (M&Ms or Skittles) and say they are magic.
One color candy gives the story more "action." So if they give the storyteller a red candy then there needs to be more action in the story.
Another color give the action more "background" which means that there needs to be more description of the atmosphere, creating a more dramatic setting (such as a storm and freezing cold).
Then a third color creates a "change" in emotion such as sadder or happier or scarier or silly.
The game can continue until they run out of magic candy or when the storyteller gets to a good stopping point. Then you can have another storyteller take a turn. You could even have a contest to see who gets the most candy by telling the longest story.
If you try this game, then please give feedback below on how it worked and any modifications you made.
Thank you and Merry Christmas!
Find more free improv games at http://www.freedrama.net/improv.html
