I hardly ever find anything remotely tech related at my local Goodwill. If anything, it's old toasters and a keyboard or two. I have had better luck from locally owned thrift stores in different communities I've traveled to. My best finds come from a little thrift store outside Naval Air Station Whidbey Island in Washington. Mostly military surplus, books, and mac stuff. I also have a lot of software from a corner thrift store I used to visit as a kid in Chicago.