Mini toggle switch can be seen clearly in pics 12 and 13.
Yep, these pics are a huge help.
The box itself appears to be a clear acrylic box (VERY similar to the Apple power adapter case) which has been painted black/gunmetal on the inside (not the outside) - this is most apparent in pictures 1 and 2.
I was thinking of painting the inside, instead of the out side, so this is a nice little finding.
The retractable cable does not simply appear to be clear, grey or black. It appears to be a sort of transparent grey (showing the wires inside) on one side, and on the other side it seems to be the same, but with a black strip along the middle. This side, due to lighting, often appears to be silver with a black strip down the middle. The cable colouration and detail can best be seen in pictures 3, 6, 7, 8, 12 and 13. Can anyone identify this type of cable? I've searched through LOADS of pics online and can find nothing.
It could be a style of cable that has been discontinued. It could be that they painted clear cable, with black, paint, and some of the paint wore off to give if that clear gray look, and the black stripe on one side, may just be a place where it didn't wear as much.
The mouthpiece appears curved across two different axis - what would be the best way to replicate this in metal? Laser/waterjet cut, then bent? 3D printing? Something else?
Any of these are good options if you can afford it. I'm WAY too cheep for any of the above, so I'll be using the old ways. A piece of metal, and a hole lot of cutting, filing, and sanding. (and blisters. :lol)
Are the heads of the "nails" that go through the mouth pieces actually a part of the nails, or are they something that has been added seperately? If not, what kind of nails are these? Are the easily available? See pic 5.
I can't see the heads well enough with my old, bind eyes, to say, but if there not found nails, then they should be easy enough to replicate.