I find myself watching my prints quite a bit, and using a flash light to do it. It would be nice if the 3D printing module had a couple of LEDs to illuminate the work.
LEDs are so low power, they wouldn’t even need an on-off switch, just run them all the time.
I don’t think the CNC needs it. It has enough clearance that normal room illumination is fine. It’s just that the 3D print head is so close to the work, it blocks the room light.