Researchers developed a new way to make fungal mushroom mats stronger by printing biodegradable plastic patterns onto them using 3D printing technology. The resulting composite materials combined the sustainability of fungal products with improved strength, making them suitable for flexible applications like smart textiles and lightweight parts. Both tested polymers (PHBH and PLA) enhanced the mycelium’s mechanical properties, with PLA showing superior strength improvements while PHBH offered home compostability.