Minox 1 design contains a few hidden accessories: There is a knurled slide on top left of the camera (above) that switches filters in front of the taking lens (center). Left side of main body (right) has a hidden accessory port that extrudes out like the door handle on a Tesla.
Binocular attachment allows Minox 1 to be held behind one the eyepiece of binoculars for extreme telephoto shots.
Hand held Slide or negative magnifier
Hand held Slide or negative magnifier
Minox flash bulb attachment. The lever on the side (left) extracts the reflector that spreads open to cover the flash bulb from behind.
Hand held Selenium Cell light meter
Minox side photo attachment for taking photos at a right angles without being noticed