You can change the actual resonator shape (it says it comes with 3 different shapes) to affect their sound. Like actually unscrew them and screw different ones on. Since this is just a piece of metal I see endless hacking opportunities here.

Looks really interesting, no doubt. But I also see that you can change the sound by just placing objects on top of the resonators, so I'm guessing if I was jamming with that, I'd try placing my hand, foot, head and a bunch of other stuff on top of the resonators. Probably find some neat sounds.

Then next week I'm gonna have zero ideas about how to recreate it again :P Already suffering with this with the modular synth, and those are just cables in specific holes.