Although Coca-Cola executives have acknowledged that New Coke was a debacle, they said yes. The company had to dig up the recipe from its archives and said it would make 500,000 cans of New Coke available on its website and in some vending machines.

The association with an oddity of ’80s consumer culture is on-brand for a show known for stirring nostalgia among viewers who grew up in the Reagan years. Its visual language owes a debt to Steven Spielberg’s “E. T. the Extra-Terrestrial” and other ’80s films, while the story and mood bear the influence of Stephen King, who has defended the practice of including brand names in his fiction. And the show’s title sequence has a look inspired by the King paperbacks that were all but inescapable during the decade.

The props on “Stranger Things” recall the era, too. One of its young protagonists carries a Trapper Keeper notebook, a onetime status symbol of school hallways; another character keeps a He-Man action figure, a popular ’80s toy, in his room. The throwback mood has been heightened by the soundtrack’s inclusions of Toto’s “Africa” and the Clash’s “Should I Stay or Should I Go.”

H&M’s “Stranger Things” collection includes a line of ’80s-style T-shirts, swimsuits, visors and flip-flops. Some are branded with the “Stranger Things” logo; others replicate things worn by the show’s characters. The collection will be accompanied by an ad campaign featuring Dacre Montgomery, who plays the villainous Billy Hargrove on the show.

The return of New Coke is perhaps the most surprising and nostalgia-inducing element of the broader publicity effort. The almost forgotten artifact belonged to a predigital time of fewer entertainment options, with network TV still dominant, and fewer soda varieties, too.

Nowadays, Coca-Cola has many spinoffs, including obscurities like Coca-Cola Zero Sugar Vanilla and Diet Coke Blueberry Acai. In 1985, there was Cherry Coke, introduced that year to a positive reaction, and Diet Coke. From late April into July, New Coke was the only drink to go under the name Coca-Cola or Coke. (The official name was Coca-Cola or Coke, and the word “new” was featured on cans.)