Take fake snow for an example.  One of the paradoxes of fake snow is that it is better than the real thing. According to Richard Rickitt, author of Special Effects: The History and Technique, once snow is trampled, it can’t be restored, so snow shots can be repeated just once or twice, after which a movie crew needs to move to a new location.

Intro theme and various sound effects by Adam Dylewski; music by DoKashiteru (via ccMixter.org); Creative Commons licensed audio from freesound.iua.upf.edu includes sound by Justine Angus, thanvannispen, cognito, dobroide, Erdie, theta4, belloq, Connum, mikejedw and batchku.