Usually composed of calcium sulfate, blackboard chalk is a synthetic material used for writing and all kinds of artistic matters. Apart from the fact that there are still a lot of countries use this oldschool technology on school blackboards, chalks are so common and vary in type that you can use them on any surface even on glass.

As Architecture of Life, we would like to share with you these 25 product design with the inspiration taken by blackboard chalks… Hope you all like them!