The Ender 3's LCD screen seems to be always on. It can cause strong bloom on your webcam image and is overly bright in a dark room.
A simple cover would do the job as well, but this is just way cooler.
No need for translucent/transparent filament, you can print it with regular PLA.
(The logo is not fully cut out, but only only 1 layer thicc.)
Ender_3_LCD_Cover.stl | 240.3KB |