Picked up some sheets of 'Foam Board' or 'Foam Core' (depending who you talk to) from a dollar store.Then i hit those with some blades, slopped some hot glue around.
This is based loosely on a station in Greensburg, IN. It's not accurately scaled, just inspired.
I have this as a seperate Station and Garage building, garage can be placed on or left off as needed.