During the war years, the models were especially popular as they were extremely portable and builders were able to work on them anywhere. Anecdotes say people liked them because they were small enough to take with you, so if you got stuck in a bomb shelter during an air raid, you had something interesting to do.
These models gained immense popularity during wartime due to their remarkable mobility and versatility, allowing users to create them from any location. Anecdotal evidence indicates that people found them engaging because they were small enough to be easily transported, offering a welcome distraction during emergency situations.