What office item was invented by Bette Nesmith Graham in 1951?

The first toothbrush was made out of a bone and small brush, by jail prisoner William Addis of England.

Christopher Cockerell invented the hovercraft in 1956. His early experiments with the idea involved a cat food tin, a coffee tin and an industrial blower.

Invented in 1911.

The yo-yo was first used by hunters as weapons. They were wooden disks on strings. In the 1920s, a man from the U.S. named Donald Duncan made the yo-yo into a toy after he visited the Philippines.

Know as the Father of Computing. He began his 'Analytical Engine' in 1833. The first computer, although he never completed it.

Alexander Graham Bell's notebook entry of 10 March 1876 describes his successful experiment with the telephone. Speaking through the instrument to his assistant, Thomas A. Watson, in the next room, Bell utters these famous first words, "Mr. Watson -- come here -- I want to see you".

SPICE (Simulation Program with Integrated Circuit Emphasis) was introduced in May 1972 by the University of Berkeley, California.

On May 24, 1844, Samuel Morse send his famous message, "What hath God wrought?"

On September 12, 1958, Jack Kilby demonstrated the first working IC while working for Texas Instruments, although the U.S. patent office awarded the first patent for an integrated circuit to Robert Noyce of Fairchild.

It was originally called the 'Epsicle' in his honor. (I can see why that name didn't catch on).