materials - How to create clear plastic? (Cycles) - Blender Stack Exchange
15 Free PBR materials with plastics, polystyrene, and tech • Blender 3D Architect
Materials Plastic Blender material
ArtStation - Simple clear plastic (polycarbonate) material
7 Plastic Realtime Shaders in Blender 3D Vol01 - Blender Market
Rendering a transparent plastic box in Blender Cycles - Lighting and Rendering - Blender Artists Community
I created a realistic PBR procedural plastic shader, easily controllable with node group inputs. Available for free on my Gumroad, link in comments. : r/blender
Basic Rubber/Plastic material for Blender by Nikola3D on DeviantArt
Speckled Plastics Shader Collection for KitOps - Blender Market
Blender Plastic Shader : r/blender
Blender 2.6 Cycles: Materials and Textures Cookbook
Glossy/plastic shaders - Materials and Textures - Blender Artists Community