Coconut shell is sourced from the hard outer husk of coconuts, a byproduct of the food and oil industries. It is commonly harvested in tropical regions such as the Philippines, Indonesia, India, and Sri Lanka. Using coconut shell helps reduce agricultural waste while creating durable products. Supply chains are often small-scale and artisanal, with limited formal certification. Coconut shell is widely used for utensils, bowls, buttons, jewelry, and decorative home goods.