I apologize if this has already been posted. This is a review of a very interesting flash-light by morphalight. It is exactly like the sort of flash-light I want.
The credit for this video goes to Chris from Preparedmine101.
I'ts made up of 2 transparent tubes. A conventional diffuser would produce a wide diffuse cone of light. This one produces a horizontal fan of light... so potentially more light to the sides where you need it and less into the floor or ceiling where you don't. Interesting idea.
I agree that this is something that looks like it could go onto any flashlight as a clip on accessory. Doesn't need to actually come with it's own light.