Steve Jobs' Macintosh SE
Steve Jobs was instrumental in creating the Macintosh, so much so that he had his own rogue team of pirates holed up off the main campus working on it. Not long after its launch — 1985, to be exact — he was ousted from the company he founded, and left to start NeXT. He didn't stop using Apple products, though, instead working on this Macintosh SE until 1994. Amazingly, it still has files from its days on Jobs' desk on its drive, and as an incredibly desirable artifact from his "Wilderness Years", is expected to bring over $200,000 at auction.