Good question! While I was making it I definitely had things in mind for what each sound could be. But you also don’t want to become overly concerned with assigning practicality to every component of a sound. Just as the source of many sounds that work great with visuals have nothing to do with their on-screen components, the same is true here.

I remember reading that Ben Burtt often begins his sound design process by thinking about what it might actually sound like in the real would due to the physics of the object, situation, etc. but then would diverge from there to serve the visuals. I used a similar approaching, adding elements until it just felt right.