what is the best thing since sliced bread?

Toasting bread began as a method of prolonging the life of bread. It was very common activity in Roman times, 'tostum' is the latin word for scorching or burning. The first electric toaster was invented in 1893 in great Britian by Crompton and Co (UK) and in 1909 in the United States. It only toasted one side of the bread at a time and it required a person to stand by and turn it off manually when the toast looked done. Charles Strite invented the modern timer, pop-up toaster in 1919.

Sliced Bread
Otto Frederick Rohwedder invented the bread slicer, which he started working on in1912. At first Rohwedder came up with the idea of a device that held the slices together with hat pins (not a success). In 1928, he designed a machine that sliced and wrapped the bread to prevent the sliced bread from going stale. Pre-sliced bread was popularized by Wonder Bread in 1930, helping to spread the toaster's popularity further.

Sandwich
John Montagu, the 4th Earl of Sandwich (born 1718) was the originator of the name sandwich. Montagu loved to eat beef between slices of toast. Eating his "sandwich" allowed the Earl to have one hand free for card playing.
After some quick googling I've discovered sliced bread is in fact a relatively recent "invention" and I'd like to know what the actual best thing since sliced bread is?

Any suggestions on the best thing since sliced bread or did mankind reach perfection in 1912?