A club member asked me about keeping figures standing on a moving train. Without thinking it through, I said “magnets.” Then I thought “What have I done?”
Went home and tried it out. Now, if I want figures standing in vestibules or car platforms, I simply glued a steel plate (thin, like gutter flashing) to the feet of the figure. (I used Goo, we’ll see how it holds up.) when the glue dried, I placed the figure on the platform, then placed (not stuck) a small magnet on the underside of the platform. Magnetism holds the plate against the floor. Then when you want to remove the figure, replace it etc, there’s no harm done to the car OR the figure.
The metal base also provides much better support for the figure than just two feet stuck in the dirt!