Most of the floor cleaning robots we cover here were designed for household use only. They cannot clean large public areas like airport waiting areas or large offices. To find a solution, Dave Hakkens, a designer from the Netherlands took a totally different approach. Why not make the vacuum cleaner a ball that can roll or be kicked around while sucking up dust from the ground. Rolling is initiated by weight redistribution inside the ball, while suction is put to the ground through the pores of the ball.