Which major retail innovation using bamboo materials first exceeded $100 million in annual global sales, marking bamboo's transition from niche to mainstream material?

In recent years, sustainable materials have transformed product development in the natural goods sector. Among these, bamboo has emerged as a revolutionary resource due to its rapid growth cycle, biodegradability, and versatility. This trivia question explores a significant milestone in bamboo's journey from niche eco-material to mainstream retail phenomenon. Test your knowledge about how this remarkable plant changed consumer product landscapes!

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Bamboo toothbrushes (2016)
Bamboo fabric bed sheets (2018)
Bamboo kitchen utensils (2014)
Bamboo-based food containers (2019)