Game Boy And The Link Cable
Four AA batteries and a green screen you could not see in the dark.
Nintendo's handheld sold on Tetris and battery life, and the link cable made trading Pokémon possible five years later.
The screen was terrible, a smeary olive-green LCD with genuine ghosting, and it did not matter because it lasted thirty hours on four AAs.
The magnifier-and-light accessory that clipped on the top was universally owned and universally rubbish.
Cost back then
£69
Goes for now
£50–£250
