Has anyone built anything like an Ototo before? we need help

Want to create something like this:

I would love to know if it is actually possible and worth figuring out.

It’s very similar to the original Makey Makey, but with a tone generator attached. And there is a schematic and source code publicly available for that.

Cheers James!! I will investigate further then.

I’d recommend having a quick look at Julian Ilett’s videos. There a few more not in this playlist. Might be an option for you if you’d like to make this with an arduino.
Let us know how you go with this project.