A story game can fill part of a long wait without adding another object to the bag. It works best when the rules are light enough to explain in a sentence. One person begins with a character and a place; the next adds something that happens.
Choose a setting that suits the children. An imaginary bakery, a library for animals or a bus that takes an unexpected turn can provide a starting point. There is no need to make the story frightening or complicated to keep it interesting.
Keep each contribution small
Try one sentence at a time. A child who prefers not to speak can choose between two ideas offered by someone else or simply listen. Adults should avoid adding a long paragraph that leaves everyone struggling to remember the plot.
If a child changes something already established, decide whether the change can become part of the fun. Perhaps the cat has turned out to be a shopkeeper in costume. The game does not need perfect continuity, and correcting every detail can make it feel like an exercise.
Use the surroundings carefully
You can borrow a neutral detail such as a color, a shape or the sound of rain. Avoid building stories about identifiable strangers in ways that could embarrass them. Keep voices appropriate to the waiting area and leave enough attention for announcements or instructions.
For a very short version, ask each person to name one thing the character carries. Then invent a reason those items belong together. This can stop after a few turns without leaving a complicated story unfinished.
Have an easy ending
When the queue moves or the appointment begins, let the character reach a temporary pause. The story can continue another day, but it does not have to. Announce the transition clearly so a child is not trying to finish a sentence while an adult needs them to move.
If nobody wants to contribute, stop. A game offered during a wait should not become another demand to perform. Looking at a book, sitting quietly or talking about the next part of the day may suit the moment better.
The pleasure is in hearing what another person adds. An absurd ending, a very ordinary ending or no ending at all can each belong to a few minutes spent together.