Vibrators have been the friend of the female orgasm for over a century now. Back in the 1800s, you could only access one via a doctor’s appointment to cure your irrational woman feelings — hysteria. When they started selling them for home use in the 20th century, companies made up weird, fake uses for them — like a nail-buffing tool (that was actually just a vibrator); or as a special attachment for the Speed Queen vacuum cleaner. One very popular way to market the vibrator was to call it a "back massager."
Probably thousands of different vibrators have come and gone, but there is one that has outlasted them all — and maybe will go on into the future as the Queen of Vibrators: The Hitachi Magic Wand.