Nintendo Game Boy, Game Boy Camera, and Game Boy Printer (1989-2003)

Nintendo Game Boy

The Game Boy is an 8-bit handheld game system that features interchangeable cartridge games. The Game Boy was first released in Japan in April 1989, and later moved to North America in July 1989. It had a price of $89.99. It was designed by the same team that designed the Game & Watch consoles released by Nintendo in 1980. The Game Boy was meant to be a "handheld NES". The success of the Game Boy led to the Game Boy Pocket, and later the Game Boy Color. It's best-selling game was Tetris, released in 1989. Nintendo sold 118.69 million units of the Game Boy & Game Boy Color combined by the time they were discontinued in 2003.

Source: Retro Games Plus 

Nintendo Game Boy Printer

Also known as the "Pocket Printer", was a Game Boy accessory released by Nintendo in 1998. It was meant to be used with every Game Boy variant except the Game Boy Micro, and was designed to be used alongside the Game Boy Camera. It was a thermal printer that used proprietary paper that appeared in four colors: red, white, yellow, and blue. The Game Boy Printer was discontinued in 2003. In Japan, an exclusive yellow Pokemon Printer was released. 

Source: eBay.com

Nintendo Game Boy Camera 

 The Game Boy Camera was an added accessory for Game Boy devices that was meant to be used in conjunction with the Game Boy Printer. It was released on February 21, 1998. The camera, which was designed in the shape of a Game Boy game cartridge and could be inserted the same way, gave the Game Boy the ability to take pixelated grey-scale photographs, that could ultimately be printed on sticker paper using the Game Boy Printer. The Game Boy Camera sold close to 500,000 units in its first three weeks on the market and was ultimately discontinued in 2002. 

Source: eBay.com