From Brickipedia, the LEGO Wiki

Polybags are small plastic bags used by LEGO for minifigures and other small sets. Many polybags are promotional, in other words, designed to be targeted to all stores. Others are exclusives for Target, Daily Mirror, or other companies, and some are special small sets such as Seasonal sets and Collectable Minifigures.

List of Polybags[edit | edit source]

Main article: List of Polybags