I may not know how exactly how to pronounce this device, but this OrigAudio is supposedly capable of playing music on any surface. From the video below, I can confirm it will at least play music on a bucket…
As shown in the video, it’s pretty easy to hook up. Ingenious little device. I had an idea that if it could make a bucket vibrate, then a laser-pointer hooked up to it would make a dot “dance” on a wall. I tried this several ways, but as seen in the video below, it was pretty ineffective.
I think if the vibration was slower and stronger, one could see an effect. At one time I could have calculated what force and frequency I would need to do this, having passed a class called “Control of Dynamic Systems” for my Mechanical Engineering degree from Clemson. During a week or so of clarity, I fully grasped these concepts.
In the real world, both as an engineer and random maker/experimenter at home, I mostly just try stuff that I think will work. Most of the time it does – here’s a good example, my MDF Geneva Drive. If you’d like one of these devices for yourself, it’s available on Amazon, and probably elsewhere if you want to leave your couch.