where do DVD extras come from?

It seems like some DVD extras are really, REALLY surprising that they exist - like the 16mm footage of the Jitterbug from “The Wizard of Oz.”

But staying a little more recent, where does something like a cut scene from “Cherry 2000” come from? Where are these DVD extras - just sitting around on a reel of film in some archive somewhere? In the director’s basement?

Why, from the Easter Bunny, of course! That’s why they call them Easter Eggs!!!

Sorry, couldn’t resist the smartass answer …

Uh, what’s the Cherry 2000 cut scene?