This is a lens cap/cover for the Onn (Walmart stock number 100028731) webcam. It's a three-piece design. One piece clips onto the housing of the camera and is self-retaining. At the front is a cover which creates an enclosed pocket for a sliding member. Two 2mm holes flank the center aperture for the camera: one for the microphone and one for the camera-on light indicator. The sliding member will cover the lens, but not the microphone of camera-on light indicator in one position, and the the other position will cover none of the three.
The front face plate and the base can be glued together, and in the model shown is glued with superglue on the two coincident faces. The thickness of the enclosed gap for the slider and the thickness of the slider is modeled as line-on-line, so that after printing you can lightly sand down the thickness of the slider to get the desired resistance you want when moving the slider.
The author marked this model as their own original creation.