The last seat in the carriage

An original narrative about an invented rail journey.

There was one seat left beside the window, but a soft blue bag occupied it. Its owner was standing a little way down the carriage, trying to persuade a folded bicycle to fit between two suitcases. I asked whether the seat was free. He nodded towards the bag and apologised, then found that both his hands were trapped behind the bicycle.

I lifted the bag onto the luggage shelf and sat down. Inside, something gave a faint metallic rattle. The owner looked alarmed until I moved it back to the seat beside me. It contained a model engine he was taking to an exhibition. He thanked me for asking before shifting it again. For the rest of the journey, we shared the space with the small, unusually important passenger.

Write down the bag's colour and what it contained.