Many years ago I created a 3d train in Tinkercad. My goal was to create all the buildings I needed for a Railroad town. (Yes, I am slow featuring the buildings here.) My Railroad Town, which I named Sunrise, has a Train Station, Saloon, Bank and other buildings. The citizens of this town would need a place to buy and sell goods; the Railroad Town Mercantile was created. Yes, I could have name in General Store, but I wanted a more sophisticated name.
This building was created in Tinkercad, which is a easy to use 3D modeling program which it free to use. It is own by Autodesk and it is their apparent their goal it to teach students how to design. This is the link to view the 3d Railroad Town Mercantile building in Tinkercad.
There is no inside of the building. I created items for placement on the porch; barrels, flour bags, crates of apples and oranges, and fabric rolls.
Note the hinge and lock on the back door. If these items were normal size and 3d printed, they would actually function.