How can you make cool Movie Sound Effects using everyday items at home?

Can you tell a real sound effect from a fake one? Why do some sound effects for movies, TV shows or podcasts need to be specially created?  What does a Foley Artist do? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.