That is the most interesting thing I have read for a very long time. And I do read some odd stuff!
As a helpless hoarder, I have quite a lot of things with electronics in them, also I have the catalytic material from a P38 rangerover . If you PM me an address I will get it sent to you.
My next recycling project is a crusher for vehicle switchgear to recover copper components. Might be too small for computer bits ?
Cheers il PM you and address.
What kind of crusher are you thinking? On my list to build is a decent hammer mill. Basically a drum with a flail inside and a punched screen in the bottom. Stuff goes in and gets pulverise until it will fit through the screen and fall out. It's perfect for liberating small metal parts from brittle plasticky stuff.
I have a small plastics ganulator which is similar but has blades. Works to granulate copper cable (just about!) But prone to jamming up and the blades wear out quick.
Trouble is once I get one I will also want a shaker table to separate the stuff and they take up some serious space 😭