Kodak Flash Cubes were ingenious, compact cubes holding four flashbulbs, each with its own reflector, designed for the popular Instamatic cameras of the 1960s and 70s, allowing amateur photographers to take four flash photos without changing bulbs, revolutionizing indoor photography with a simple "pop-on, flash, rotate" system. They connected to the camera's socket, rotating automatically after each flash, making flash photography easier and safer than single-shot bulbs.

Key Characteristics:

Four Bulbs: A cube contained four miniature, expendable flashbulbs, each at a 90-degree angle.

Reflectors: Each bulb had its own small mirror reflector for better light distribution.

Ease of Use: They plugged into a socket on the camera, simplifying the process from "drop in the film, pop on the flashcube".

Rotation: After each shot, the cube would rotate to present the next unused flashbulb for the subsequent picture.

Battery Operated: The camera's battery triggered the flash; some later versions, called Magic Cubes, were battery-free.

Color Options: Some cubes had blue-tinted bulbs for better color balance with daylight film, while others were clear for indoor/flash film.

Obsolete Technology: Replaced by the convenience of electronic flashes, flash cubes are now nostalgic collectibles.

Impact: The Flashcube made indoor and low-light photography accessible to everyone, transforming casual family snapshots by eliminating the fuss of changing bulbs, a huge leap from older flash technology.