A cute little site from Stephanie: Santa Claus Workshop. Has Christmas songs, stories, etc.
Elisa also found this site that has Christmas games for younger students: UpToTen
Elisa sent me this website for adults who need to check in at the airport. While the process will be slightly different for each airport, this website covers the basic terminology like “frequent flyer miles” and “international itineraries”.
Of course, if your student is a musician, you should also show them United Breaks Guitars. 🙂