Gary Fong Collapsible Speed Mount Light Sphere (White)
One of my favorite light modifiers that stays in my bag is the Gary Fong Light Diffuser! This is a very dynamic diffuser and can be used for all types of photography. It's collapsible and will experience minimal wear and tear, if any. It's been in my bag for a year now and it comes in handy whenever shooting with my speedlight on and off the camera.