Fad

fad
a product, especially a fashion, that comes quickly to the attention of an eager public, achieves peak sales in a relatively short time, and rapidly declines in popularity, that is, a popular product with a particularly short life cycle ...

Fad products, such as certain toys, may be popular for a period of time only to see sales drop dramatically until a future generation renews interest in the toy.

See also: Cycle, Analysis, Market, Product, Development