I am using a cheap Playstation Eye camera (link below) with my OctoPrint server, so I created a mount for the end of the rail to set the camera onto. For a more secure fitting, I added a small piece of double-sided tape on the bottom of the camera.
I might revisit this in the future, to add a cover that would extend over the end of the rail.
Creality_Ender-3_PS_camera_rail_mount.stl | 8.5KB |