Sounds like a good candidate for recycling heavily damaged/busted up case plastics using olde school techniques:

Cut texture matched flat panel section of case to fit SE's floppy slot (possibly a tad oversize adjustment for cooling shrinkage?)

Make female plaster cast with blank face down (a II/IIx/IIfx cover blank might work if shrinkage isn't an issue? Release angles-n-edge form built-in)

Glue water (soluble) LED to cast in proper position

Inject/pour molten case plastic into mold (I'd test a mucked up or cheap hot glue gun for suitability)

Dunno, just chuckin' the notion out there. ;D