3. Lego: Light & Sound (First appearance: 1986)
Lego hit many peaks in the 1980s — mini-figures could fit inside vehicles, the Town theme was hugely expansive, and there wasn’t any apparent gender divide. Oh, and there were flashing lights and WEE-OOO-WEE-OOO noises, which was equally important.
Yes, light and sound came to Lego in the cunningly named Light & Sound System, amusing small children and scaring the living daylights out of pets. The line petered out in the late 1990s, presumably because kids were no longer impressed by a tinny speaker and some flashing bulbs.