Even in his later years, Goldberg remained active as a cartoonist and sculptor. He continued to create new inventions and explore different artistic mediums, showcasing his lifelong dedication to creativity. He also started to take on new challenges and forms of creation as his life continued.

Goldberg was actively involved with the National Cartoonists Society, serving as its president from 1947 to 1949. He mentored young cartoonists and promoted the art of cartooning as a valuable form of expression.

The concept of Rube Goldberg machines began to gain popularity, leading to the creation of contests and competitions that challenged participants to build the most elaborate and inefficient devices. These contests helped solidify Goldberg's legacy as a symbol of playful ingenuity.

Rube Goldberg passed away in New York City on December 7, 1970, at the age of 87. His death marked the end of an era, but his influence on cartooning, engineering, and popular culture continues to be felt today.

After his death, Rube Goldberg's work continued to inspire and influence artists, engineers, and inventors. His name became synonymous with complex and absurdly inefficient machines. The Rube Goldberg Machine Contest remains a popular event, celebrating creativity and ingenuity.