Scientist Jonathan Schattke is quoted as saying, “Necessity is the mother of invention, it is true, but its father is creativity, and knowledge is the midwife.” Fair enough, but what happens if the offspring came from the shallow end of the gene pool? LIFE magazine explores this as they count down 30 retro inventions that may have seemed like a good idea at the time but are really just plain terrible. Have a look at some of the after the jump.