Harry Potter has come to appear in almost every industry. I'm not saying its too much (completely ridiculous, any deticated fan would say - such as myself) but it is omnipresent. And not just Harry Potter, you've got Dumbledore, Ron, Hermione, Snape, Scamander, and so many more. 

Quidditch is, if you weren't aware, a real game. There are competitive leagues where people don't fly. It would've been awesome, but instead players carry their brooms, and play a nice combination of american football/soccer with ring goals. 

Another interesting apperance of Harry Potter into the real world is the use of its theme from the movies as a ringtone. If you want to check it out, Harry Potter ringtone, or just listen to the movies. I personally am quite happy with the composer's work.

Another item in the world of Harry Potter that has found so much love from the fans are the wands. Handmade, custom made, true world, cores inside (if its possible?), or however you want, they exist. And any superfan will have one. Hogwarts Project gives a nice overview if you're interested. 

So Harry Potter has spread to the real world. I'm not complaining.