Speakers for art project (Abbeyhill EH7)

By speakers I mean audio speakers, for example from a hi-fi, car stereo, computer speakers, however large or small, high fidelity or tinny crappy sound. Just speakers, powered or unpowered. Wired or wireless. As long as they WORK and I can operate them without some boondoggle that was mislaid. This is the only requirement. Exceptions would include anything that needs high voltage to operate, for example guitar amplifiers, etc. Let me know if you have something you think might suit, and we can discuss.