ebay is your friend. People buy entire boxes of unknown old electronic equipment junk that may or may not be working. "As is." You don't even have to really list the contents, just a big picture of everything. I think a lot are scrapping the gold and components, something I got into for awhile. I got almost 4 oz of solid gold from crushed cpu's, memory, old IC's, cable connectors, etc., using nitric acid, a hammer and a jar. Also recovered silver. At current gold prices (about $1950/oz) those little bits add up. Old tantalum capacitors sell for quite a bit as well. They used to be huge and if recycled, many smaller modern surface mount caps could be made. There are several channels on youtube showing the process. It can be a fun hobby. Instead of taking my old gear to a recycling center, I throw it in acid (lol).