Published for the first time in 1997, the world-famous series entitled Harry Potter completely amazed thousands of people around the globe. With his adaptation on the big screen in 2001, its popularity skyrocketed more than ever.
Through the years, a diversity of merch has honoured and cultivated the series' fame; in fact, we've seen plushies, dolls, figurines, wands, costumes, shirts, scarves, deserts, board games, and video games.
If you wish to read more on this subject, I highly suggest you take a look at this CBR article
I also recommend that you watch the official reveal trailer before you continue reading!