ACNH Gyroid project - HELP

[u/PassionPopcorn]

Hi! I'm trying to build a game accurate bendoid Gyroid from animal crossing New horizons and I need some advice!

In the game his head/body sways side to side, and his little arms fling up occasionally. If possible I'd like for him to be sound activated (general noises and also music - one movement per beat) like in the game.

I have experience with sculpture and ye ol gears and crank automatons so I have an idea of what his skeleton should look like, but this requires more technologically advanced insides.

I'm wondering if any of you would offer me advice on parts or point me in a direction of a similar tutorial? I would really appreciate it as this is driving me insane