One of the best cameras I ever owned was an old Polaroid SX70. The original tan leather model now commands crazy prices when they appear for sale and film is increasingly difficult and expensive, but using one is unlike any other camera.

People who would otherwise turn away when a camera is pointed at them, are quite happy to pose in front of the SX-70 once it pops open concertina style.

The fact that collapsed it looks like a Star Trek tricorder also helps.