Long ago I sent away for some information from Intel, they sent me back a lot of brochures and a few manuals but the biggest treasure was a bare 486 die complete with a little magnifying glass. I'd look at this thing constantly. It sounds sort of like what you had for a keychain.

I'd love to having something like that again. Do you know if it is possible to acquire these? I tried googling but I'm coming up short, I can't find the right search terms.