The Eames called their plywood-molding apparatus the 'magic box.'

Making beautiful, affordable design available to the masses was a central tenet of mid-century modernism—one that never would’ve been possible if not for the advent of a key material: plywood.
That plain little sandwich of lumber and glue—with its origins in ancient Egypt and its reinvention under the auspices of 20th-century military research—gave designers from Alvar Aalto to Charles and Ray Eames the raw material with which to shape some of the most iconic furniture of the past 100 years.

Eames famous for his design using plywood as main material. most of his product explore plywood and use it's potential to the fullest possible. He is one of the example of famous designer to use plywood.