Which sustainable packaging innovation was first widely adopted by major film studios for their physical media releases (Blu-ray/DVD) in 2020?

The film and television industry has been making significant strides toward sustainability in recent years. One major area of focus has been packaging design for merchandise, physical media releases, and on-set catering. This poll tests your knowledge about innovative sustainable packaging initiatives that have emerged specifically within the entertainment industry. Do you know which groundbreaking packaging innovation has been widely adopted by major studios?

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Mushroom-based mycelium packaging that biodegrades within 45 days
100% recycled plastic cases made from collected ocean waste
Hemp-based cardboard alternatives that use 70% less water to produce
Compostable plant-based shrink wrap derived from sugarcane waste