A few thoughts come to mind
- Modular Grain Elevator: Section A is a standalone grain elevator with several silos, the Section B has silos that can be added to the first section to expand the overall building. One can add multiple B sections together to extend the overall length of silo.
Examples of configurations: A , A+B , A+B+B , A+B+B+B , etc....
- Modular Icing Platform: Similar design to the above mentioned grain elevator, this icing platform can be built-up in sections. Each section (P) would have a set of removable steps that can be mounted on either side of the platform section. This way one can tailor the length of the icing platform to the space they have
Examples of configurations: P (w/ steps) , P (w/ steps)+P (w/ steps) , P (w/ steps)+P , P (w/ steps)+P+P , etc...
- F.W. Woolworth Co. Building: I haven't seen one made yet in O gauge
If you want further info on these product ideas, my email is in my profile.
Bryce