The first washing machine
A washing machine was made in about 1677 by an Englishman named John Hoskin. Fellow Englishman William Bailey made a more efficient version in 1758. The first mass-produced washing machine was invented by American Alva J. Fisher in 1907, and was called the Thor.
The first microwave oven
The Raytheon Company in the USA began using microwave ovens in 1947 to cook food commercially. The idea came from one of their scientists, Percy Spencer. He had been standing near a microwave tube and noticed that a chocolate bar in his pocket had melted, although he had not felt any heat. The first home microwave appeared in 1952 and cost $1,295.
The first pop-up toaster
Charles Strite, a US mechanic, invented the pop-up toaster in 1919. There were toasting machines before then, but they had to be watched carefully all the time so the toast didn't burn. Strite worked out a way to put a timer and springs into the design. His first toasters were large machines, used by restaurants, but in 1926 he launched a smaller version called the Toastmaster.