If there is something that dominates children it is a current mobile device, be it a phone or a tablet. At Christmas they have a lot of free time, in which they will use these devices to a greater or lesser extent. The time spent will depend on the age and, above all, on how permissive the parents are.
For those times when we decide to “lend them” our phone or tablet, there is a large number of games and activities related to Christmas. They will surely have many fun times with them, and it will help them feel immersed in the Christmas atmosphere of these dates.