The term "disposable" might be a post-war thing (The Google Ngram views for "disposable" https://books.google.com/ngrams/graph?content=disposable&year_start=180

The term "disposable" might be a post-war thing (The Google Ngram views for "disposable" https://books.google.com/ngrams/graph?content=disposable&year_start=1800&year_end=2019&corpus=en-2019&smoothing=3 https://books.google.com/ngrams/graph?content=disposable&yea... and "disposables" https://books.google.com/ngrams/graph?content=disposables&year_start=1800&year_end=2019&corpus=en-2019&smoothing=3 https://books.google.com/ngrams/graph?content=disposables&ye... are pretty neat.) However, the concept is older. One-use paper Dixie Cups started around 1910, replacing the shared cup. "How unsanitary!" you might think of the old system. Sure, but the Dixie Cup Company sure did promote that hard. "Just think of the luxury—a new cup filled with pure water all for a cent" - https://journals.sagepub.com/doi/pdf/10.1525/ctx.2010.9.1.73 https://journals.sagepub.com/doi/pdf/10.1525/ctx.2010.9.1.73