When someone is upset, it's often raining. When someone is happy, there is often balloons, music, sunshine, or rainbows.
Musicals and plays are very good at this because the set is often another character in the narrative.
Have you ever been on a boat? How was it different from being on land?
If you haven’t been on a boat, what do you think it would feel like? How would you feel when the ground moves?