Even just the plain etch-a-sketch using motion sensing is cool enough.<p>I suppose this might have been done already?

I did NOT know the motion sensors on my phone were THIS precise, that’s surprising

change paint brush size -&gt; whistle<p>change color -&gt; put finger in front if camera<p>make drum sound -&gt; tap side of phone

Tapped very hard, never worked once. Using android on pixel phone.

tap the side of the phone, it responds to accelerometer sensor.

Is there a reliable way to trigger percussion?

which reminds me of building breadboard RF sensors (using fixed caps with variable for calibrating parasitic capacitance) and since these are just oscillators you can calibrate a beat frequency (heterodyne mix) in audible range that has the theremin timbre of a squarish sine wave that you can plug straight to a speaker

It seems to make the user dance, would fun to see video of people using it for the first time. haha