Whiteboard
Whiteboards became commercially available in the early 1960s, but did not become widely used until 30 years later. Early whiteboards needed to be wiped with a damp cloth and markers had a tendency to leave marks behind, even after erasing the board. Dry-erase markers for whiteboards were invented in 1975.
Dashboard
Padded dashboards were advocated in the 1930s by car safety pioneer Claire L. Straith. In 1948, the Tucker became the first car with a padded dashboard.