Nadel Enterprises has introduced the Opus Easy line of speedlite light modifiers. They fit most Canon, Nikon, Sony, and Olympus flash units. Details are here.
“More and more photographers are adding multiple speedlite flash units to their lighting set-ups,” notes Nadel’s Bill Wood, even in the studio. Using these light modifiers, “photographers are given complete creative control over the light output and quality” from their flashes.