Which packaging innovation revolutionized access to religious texts in the 15th century, making scripture more widely available to the general public?

Throughout history, religious texts have been packaged in ways that reflect their sacred status. From ancient scrolls to modern digital formats, the presentation of holy writings has evolved dramatically while maintaining symbolic importance. This poll explores how different religions have approached the packaging and presentation of their most important texts, reflecting both technological advancements and cultural significance.

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Gutenberg's movable-type printing press, which allowed mass production of the Bible
The introduction of vellum pages replacing papyrus scrolls
The development of illuminated manuscripts with gold leaf decoration
The creation of pocket-sized prayer books with leather binding