I will be traveling during a month in Asia with my family. There will be several long-distance bus and train journeys.
What kind of activities can I propose to my children during those long journeys in trains and buses? (I have boys and girls from 7 to 15 years.)
Note: I know this kind of question doesn't really fit the Stack Exchange way of life because there is not "one good answer", but instead there will be (I hope) a lot of answers. Votes, then, can be seen as a sign of "this idea worked for my kids". I hope that this kind of question will be tolerated on SE, and that this question won't be closed.