While an iconic of the silent film era, Charlie Chaplin’s movies never got the audio oomph of THX. Here is your chance to make the silent era come alive by adding foley sound effects to a movie lacking them. Select a clip from the Annotated Filmography of Charlie Chaplin. Turn the sound all the way down, and study the action to identify places where you could add sound effects using every day objects around you, or even just your own ability to mimic sounds. These should not be recordings of sounds on your computer, you must make them in real time.
Play the movie back with the audio turned down, and then record your own audio with the sound effects. Make a new video with your sound effects replacing the original.
Learn more about Foley Artists and watch examples (1, 2) of them in action.