Which meditation cushion design innovation was specifically developed by Zen Buddhist practitioners in the 13th century to address the physical challenges of longer meditation sessions?

Throughout history, religious communities have developed specialized products to enhance worship, meditation, and spiritual practice. From incense burners to prayer beads, these items reflect deep cultural and philosophical traditions while addressing practical needs of believers. This poll explores the fascinating history behind a notable spiritual tool that underwent significant product development to meet changing spiritual needs. Test your knowledge of how religion and product innovation have intersected throughout history!

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The crescent-shaped zafu filled with buckwheat hulls
The square tatami mat with bamboo core
The elevated wooden seiza bench
The circular cotton cushion with lotus petal design