Teams compete at the Intercollegiate Quidditch Tournament, held in Middlebury, Vermont. Christopher Capozziello/Getty Images Defictionalization is when something that previously only existed in a movie universe comes to life.

Films and TV shows are now taking advantage of this more than ever before.

In the world of TV, Castle has spawned a series of books by Nathan Fillion’s crime novelist character; Parks and Rec has spawned a guide to Pawnee written by the characters themselves; and Archer is now releasing an album recorded by Judy Greer’s character Charlene (and not, apparently, by Judy Greer).

Here are ten great examples of fictional products from movies that became defictionalized in interesting ways.