Amazon.com : Glow 12x12' Butterfly Light Modifier Scrim Kit w/Lightweight Collapsible Aluminum Frame, White Diffuser Screen Fabric and Carry Case, Perfect for Still/Video and Portrait Light Diffuser Photography : Electronics
Polycarbonate Film Light Diffusing, Film, Clear, Makrofol® LM 309, Gloss / Matte, Light Diffusing Grade, Case of 25, (0.012 in x 24.5 in x 48.5 in) | Curbell Plastics
DIY Light Diffuser — Materials, Tips and Video Tutorials