There are others - the "iron feather" (plume de fer) that made writing much cheaper and much easier in the 1800s. Meanwhile, wood pulp paper, around the same time, made paper much cheaper. People think of the "print revolution" of Gutenberg et al, but this subtle change had a significant impact on society as well, not just in terms of literacy and communication, but also in terms of, within a century, destroying the occupation of "chiffonnier" (rag picker), who picked up all manner of detritus from the streets to recycle back into the paper-making industry.
It is what motivated Prefect Poubelle to require garbage cans to be placed around towns in his prefecture, beginning in 1884 - the people who once cleaned the streets and recycled these materials back into productive use, especially in the paper industry, were no longer needed. Instead, large forests of trees were needed and paper was almost always "virgin" paper, not part of a continuous cycle.
