Yo-yos became extremely popular in the United States during the 1920s and have remained a classic toy for generations.
LEGO introduced its modern plastic building bricks in the 1950s, allowing children to build countless creations from interlocking pieces.
Model trains became popular toys in the early 1900s and allowed children to create miniature railroads complete with tracks and scenery.
Cabbage Patch Kids became a huge toy craze during the 1980s, with each doll coming with its own name and adoption certificate.
Barbie was introduced by Mattel in 1959 and has since appeared in hundreds of careers, fashions, and styles.
The Slinky was introduced in the 1940s after engineer Richard James discovered that a coiled spring could appear to walk down steps.