Ask your students if they have a special X-mas song. They should bring the lyrics and look for a video and play it in the class.
They can have a contest for the most voted song and even for the Top 5 Songs or Artists.
I found this video and I share it here: it could be used as an exercise to correct the lyrics and at the same time to listen to a nice song by Enya.
If you have a list of favourite songs, please share it here!
ps: a nice blue X-mas song, too
… and a Sax nice song!!