Some Pikmin cards have been released.
Nintendo released a series of e-reader cards (called e+ cards in Japan), which feature Pikmin characters and enemies. The cards can be used to unlock levels of mini-games within Japanese copies of Pikmin 2 by connecting one's Game Boy Advance and e-Reader to their GameCube. A binder for holding the e+ cards was also released.
The main set contains 60 cards spread across 12 packs with 5 cards in each pack. There are 20 red cards, 20 blue cards, and 20 yellow cards. There were also a few promo cards which were released. Three of the Promo cards, including Olimar, Louie, and the President, were given out with every copy of Pikmin 2 in Japan. Two cards were given out in weekly issues of Japanese gaming magazine Famistu, and another was given out in the official Pikmin 2 strategy guide. Six cards were given out via Club Nintendo, and are the rarest cards in the set. The complete set of cards totals to 72 cards. A card binder was released with the Famitsu Cube + Advance magazine July 2004 issue as an appendix, which can hold the complete set of cards.
Nintendo 3DS Pikmin AR Cards
Every Nintendo 3DS/2DS system came with a pack of six AR cards, with one of them featuring clay art from Pikmin 2. There was also a Red Pikmin, Yellow Pikmin, and Blue Pikmin AR card released, which came bundled with a 1000, 2000, or 3000 Yen eShop download code in a Pikmin-themed packaging. These cards make use of AR technology as well, allowing them to be able to display 3D animated Pikmin models using the camera of a 3DS. The Red Pikmin AR Card was also bundled in with the AR card holder, a Club Nintendo reward exclusive to Japanese members.
Takara Tomy Arts Pikmin 3 Gummy cards
(ピクミン3グミ?) These packs were released by Takara Tomy Arts and come packaged with Pikmin cards and a cider flavored gummy candy. They were released on September 17th, 2013, only in Japan. Each pack comes with three cards, and there are twenty in total.