The 20 year old Apple iSight camera.
This is my original Apple iSight camera (Rev C) that I purchased sometime around 2005. Its specs don't mean much today with a mere 640×480 resolution, but to me it stands out as a remarkably well-designed piece of hardware.
The best detail was the rotating aperture ring used to turn it on and off which made it very clear when it was off, as the camera lens was completely hidden.
Rotating the iSight aperture ring.
These early iSight cameras are also a bit popular with hackers and tinkerers who have been modifying them to use more modern 4K cameras:
