Which sustainable packaging innovation was first widely adopted by major film studios for their physical media releases (Blu-rays/DVDs) as part of industry-wide environmental initiatives?

The film industry has a significant environmental footprint, from massive set constructions to global location shooting. In recent years, major studios and independent filmmakers alike have been implementing sustainable practices to reduce their ecological impact. This trivia question explores how the entertainment industry is embracing environmental responsibility through innovative product decisions and production techniques.

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Plastic-free, plant-based packaging made from agricultural waste
Recycled cardboard cases with soy-based inks
Biodegradable plastic cases made from algae derivatives
Digital-only releases with redeemable tree-planting codes