You can use a transducer to excite any physical surface. This is how plate reverbs work for instance.

You could stick one (or two) transducers to a guitar or piano and then mic it up, and get the sound of the body of that instrument and parasympathetic resonance of any undamped strings.

The body is quite easily modelled with an impulse response, but parasympathetic resonance in DSP is still not great