Merklisten
Various Christmas Activities
On this website, there are some really nice ideas for Christmas activities with younger children, but also for a higher learning level.
There are links to videos, pictures and other websites which are connected to the topic. You can also find jokes about Christmas there.
I would recommend the first Christmas wordsearch as it can be adapted to every age group and learner level, the "Victorian Christmas" questionnaire, which is aimed at A2+/B1 level and "The Night before Christmas Assembly" which is also aimed at younger students (Possibly 2nd to 4th year of English).