The sound of the antenna on the roof rotating to obtain reception for the current channel being watched on TV.
butrfly, I had no idea roof antennas rotated. I thought they were just stuck up there. I guess I was always too far away from the roof to hear anything.
The sound of freshly washed sheets flapping in the wind on a clothes line.
The sound of the shutter aperture on a camera opening and closing on a camera when a photo is taken.
The flap flap flap sound at the end of a reel of film being rewound on the spool of a movie projector.