Which religious product design innovation is credited with helping to spread Buddhism across Asia by making texts more accessible to practitioners?

Religious objects have been produced, marketed, and sold for millennia. From ancient prayer beads to modern digital prayer apps, the marketplace for spiritual products has evolved dramatically. This poll explores the fascinating intersection of commerce, product design, and religious practice across different faith traditions. Test your knowledge about how religious products have been designed and marketed throughout history!

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Prayer wheels with embedded sutras that allowed merit to be generated through physical rotation rather than reading
Meditation cushions with ergonomic designs that enabled longer meditation sessions for practitioners
Lotus-shaped incense holders that created symbolic spiritual atmospheres in temples
Portable shrine boxes that allowed travelers to maintain their practice while away from temples