Since the original release of Animal Crossing series, much merchandise has appeared. It varies from action figures to play sets to games. Most of them are available within the certain period of an active Animal Crossing game, some however can be obtained in special promotions and events such as preorders.
List of merchandise
Club Nintendo produced several exclusive Animal Crossing items.
My Nintendo has had several Animal Crossing related rewards available.
Happy Home Designer themed carrying case for the New 3DS XL
An official Nintendo Switch travelling case with leaves covering it (based on the game Animal Crossing: New Horizons)
A pin (right) given to GameStop employees to promote the release of Animal Crossing: New Leaf
New Horizons themed SD card
A reusable shopping bag with the logo of Dodo airlines