Giga Pet

Aside from Tamagotchi, the most popular line of keychain virtual pets when they were a fad. A large line of Giga Pets were made, ranging from dogs to cats to penguins to just about any other animal you can think of. Just like any other fad, many kids brought it to school. And just like any other fad, the teachers and administrators gave it the thumbs down. But kids still brung them anyway. Giga Pets were a major fad until the Pokémon Era (1998-2002), and even put you in control of your own monochrome version of the media's most famous critters (for example Salem from Sabrina: The Teenage Witch). Giga Pets were even sold as a promotional offer at KFC at one point. And although you probably won't be able to find a Giga Pet today, they truly were the biggest revolution in monochrome crystal-screen handheld gaming since the Game & Watch.