I've got my cool BIC Venturi Formula 2 speakers... they are really efficient and I completely dig the sound of them. I bought them for $9. I ended up upgrading to $800 Infinity Beta 40 speakers. They still completely dominate the wimpy little Mission M70 speakers I'm using in my dorm room. Alas, but they're big (This is a picture from like 2004 or whenever I got them)
I also have a Kenwood KR-710 receiver. It's nothing fancy, but I got it for $5, it's pretty compact, and powers my M70s pretty well.
The crown jewel of my big-power receivers is the "Darth Opto", as previously owned by the head-fi demigod Jahn. It's an Optonica SA-5205, and it's gigantic. Headphone output whips around my 400-ohm K340s like a redheaded stepchild. I've never gone more than 20% up the volume knob. I don't know why they thought they needed that much power (or why it's one of the entry level models, my friend has an SA-5505 which is bigger and scarier) being that it's easily driven every speaker and headphone I've ever used with it.
It's not super vintage, but I have an IBM "Model M" keyboard. The one pictured dates to 1997, although I also have one from the eighties. It's the same design as the original IBM Personal Computer keyboard. Instead of the wimpy rubber domes on a plastic membrane of modern keyboards, or the wimpier "scissors" mechanism on laptop boards, it has very heavy duty metal springs on the keys. It takes a strong touch to hit the keys on that baby, and it's loud, but a good typist like me is really fast on it. To be honest, it's packed for college right now, and I'm typing this on a Dell quietkey at like two thirds of my regular speed because I keep hitting stuff by mistake because the keys are so much less stiff. I got three 1997 models from my school when they threw out a whole box full of them (they are cool, half the keys have weird green symbols on them, and the enter key is orange). I also got a 1984 model (complete with detachable coiled cord) at a flea market for a few bucks.
This is certainly one of the cooler finds, a trashpicked Fisher 500B tube amp. Sorry, no headphone out, but it does work. I looked into restoring it, but never really got around to it. It does drive speakers fine though, and looks cool, but I'm iffy about long term reliability without restoration first. It's in my parents basement as a "To do when I'm at a point in my life when I have the time and money to restore an amp" project
And my vintage car, the 1989 Olds Custom Cruiser (yeah, it's 89, but the design is pretty much unchanged from 1977) with the 307ci CARBURETED oldsmobile V8.