Here's a couple ideas:
- Do a cooking class (make smores, or (non-alcoholic lol) eggnog, or cookies, or something)
- Do something with online content requiring that the kids use their phones (ie set up a fun Kahoot quiz)
- Do a Christmas themed scavenger hunt. Keep it in the class if your kids are a bit, uh, boisterous, or out in the school ground if they're better behaved.
- Do something crafty. Make snowflakes, or have them build a christmas scene out of layers of construction paper, or the a snowman out of plasticine. Make it a contest with student judges and prizes!
- Do a "Scene It" game. Multiple short (less than a minute) Christmas themed videos, and students race to write the answers them, winning stickers or something.
- Christmas themed skits.
- Christmas themed Madlibs
...
