Thanks Matt_H,
Well, it's not the floppy disk face plate I'm looking for, but the small plastic piece you can see in the picture which leads the light from the floppy disk led to the from of the case... I'm not sure how to call it so I better use that description.
Thanks!
Ah, I didn't even realize that was a real part until just now. My 3000 just has a thin piece of translucent plastic wedged in there, and the second floppy bay doesn't have anything at all. Maybe contact the guy who made the other 3D-printed parts? He seems pretty talented - maybe he could fabricate one of those LED covers, too.