Guide Santa back to the village with this Build Your Own Blocks style coding activity courtesy of Google: https://santatracker.google.com/?hl=en#codelab
TouchDevelop 8-bit Festive Challenge
Create festive 8-bit artwork using Microsoft TouchDevelop: http://touchdevelop.weebly.com/hour-of-code.html
Festive Binary Challenge
In this festive themed lesson, students will learn about how data is stored in computers and also how to convert binary to denary (and vice-versa): http://teachwithict.weebly.com/binary-representation.html
Code with Anna & Elsa (Frozen)
Learn how to code by creating snowflakes and helping Disney's Elsa and Ana to ice skate around the computer screen: https://learn.code.org/s/frozen
Python Snowflakes
Learn how to create snowflakes using the turtle function in Python: https://www.youtube.com/watch?v=DHmeX7YTHBY
Scratch Santa Game
Create a Santa game for Christmas using Scratch: http://www.lttonline.net/blog/2013/12/7/creating-a-christmas-game-using-scratch
Please let me know if I have missed anything and I will add it to the list!