The thread-name rings a bell for me...For those that never had Lionel O-scale trains as a kid...Plasticville was the brand-name of a line of buildings and structures marketed by Bachman company from 1948 on that were made to 1:48 scale, the same as O-scale model railroads. After WWII, plastics 'came on the scene' and everything was being made of plastic...from dishware to plastic models.
By the '60s, even Christmas decorations became mostly plastic due to the low cost of oil used to make plastics. Even in the 1967 movie "The Graduate" staring Dustin Hoffman as a recent college grad, he was told where to make his fortune...'plastics'.
In short, the 'execution' of the Plasticville scene very well depicts the toy-like quality of the Plasticville models. Even the vinyl siding (plastic) on the house fits the scene. Fortunately, they could be glued back together quite easily if needed.