Meet the Vsoundbox: a Bluetooth device that turns any surface into a speaker using vibrations. It connects to your phone and makes the surface you put it on vibrate. The device is compatible with smartphones, tablets, laptops, and other smart devices. It supports devices. Vsoundbox is compact and portable.
You can use this speaker on tables, desks, and anywhere else that you can think of. The above video gives you a better idea how it works. More information is available here.