Nostalgia for the 1980s is at its peak. From "Stranger Things" to synth-pop playlists, the '80s vibe is everywhere, and collectibles from that decade are hotter than ever, including Happy Meal toys.

McDonald’s is pressing rewind — and this time, it’s for the fans who never stopped asking. Nearly four decades after they first took over Happy Meals, the iconic ’80s toys that transformed everyday ...