SOUND EFFECTS TAKE CENTER STAGE!
Manual sound effects were an important part of the sound man’s repertoire. Common manual sounds in addition to door knocks, footsteps and telephone sounds included:
adhesive tape, stuck together and pulled apart, simulated the sound of skin being ripped off; chopping cabbages or cantalopes for beheadings; snapped pencils or celery for broken fingers and bones.
Here are a few the Rio Grande Players have added to their repertoire: snapping a metal clipboard for a gun shot; gently shaking a can of tennis balls for a heart beat and slowly squeezing a bag of potato chips for a cracking fire.