These days, there are a lot of modifiers out there for speedlights, but this is certainly amongst the more unusual ones I’ve seen. It’s the “Dualflash” and it’s about to launch on Kickstarter. What it essentially does is turn your single speedlight into two. Kind of. It splits the output into two separate sections, but its practical uses seem fairly limited.
Like most speedlight modifiers, it slots over the head of the flash and then holds on with a velcro strap. It sits directly across the centre of the Fresnel lens splitting its output into two distinct areas, allowing you to then gel and alter them independently. At least, that’s the theory. How well it’ll do in reality… I’m not convinced.