Mr. Chair is actually known as an Invisible Chair as well. It was made by Paul Sandip as a tribute of sort to another designer, Phillipe Starck who is best known for the Mr. Impossible Chair.
As a prelude of sorts, Sandip made the Mr. Chair. The chair is practically a standard chair that comes with four legs and are transparent. Each one has a mass of polystyrene balls inside, reacting to shaking and electrostatic energy which should really invite more mischief, especially if you have a lot of unruly toddlers that are sure to be fascinated by this cool chair design.