Flash Diffuser Light Softbox by Altura Photo (Universal, Collapsible with Storage Pouch) for Canon, Yongnuo and Nikon Speedlight
Softboxes: Containing, Directing and Diffusing Light - 42 West, the Adorama Learning Center
Amazon.com : Meking Light Diffuser Diffusion Fabric 2 Yard x 67 Inch /2 x 1.7 Meters Nylon Silk White Seamless Light Modifier for Photography Softbox, Light Tent and Light Modifier : Electronics
Profoto Diffuser Kit for RFi Softbox (2 x 3') 464264 B&H Photo
Neewer Collapsible Softbox Diffuser Compatible with Neewer 480/660/530 LED Light Panels, 11.5x11.5inches Opening with Strap Attachment and Carry Bag for Photo Studio Portrait Video Shooting
Softbox DIY with Continuous Light for Video (2017 Instructions) / Large Diffused Foam Board - YouTube