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.
Bowling
In 1948, bowling lanes were first built in the ground floor of the West Wing of the U.S. Presidential residence, the White House, as a birthday gift for then President Harry S. Truman, in the location of the 2010s White House Situation Room. The lanes were moved to the Old Executive Office Building in 1955 to make way for a mimeograph room.