Fidget spinner

Fidget Spinners have been around since 1993, but it wasn't until 2017 when they became a craze, partly because non-autistic children picked up the practice from autistic classmates. They are sold by shops catering to people with special sensory needs, as a calming device. In general "executive pacifiers" like the fidget spinner have been around since the 1920s or earlier, and include Newton's cradle and the drinking bird.