While working at a used computer store / electronics recycling depot, I covered a wall in the lobby with 600+ used motherboards. It was pretty sharp (looking).Sorry. No pics...
I have not reused old circuit boards.
I had these made to see where I could just design circuit boards as jewelry:
I still kick myself for not buying a core memory panel at a Meadowlands fest back in the mid-80's.
I once had the idea of tiling a wall with old ceramic PGA-package CPUs, with the gold lids on them.