The Music Box (1932)

Visible crew/equipment: When Oliver starts walking down the steps to see the policeman, the piano crate starts sliding down the steps after him. You can see the shadows of the camera and crew on the side of the crate when it slides past.

Ollie: Where there's a will, there's a way.

Trivia: "The Music Box" is a remake of one of Laurel and Hardy's earlier silent films, "Hats Off", which is now presumed lost.