Had another dumb idea and had to make it.

This model uses a generic USB arcade joystick kit and single arcade microswitch to make a toilet with a plunger that controls direction and the lever is your fire button.

The plunger rubber is printed in TPU to allow the joystick motion.
To make the lever smoother, I used a generic skateboard bearing press fit into the tank's opening (might be fine without the bearing because of the hole size).
The tank lid and seat lid have holes for 3x6mm round magnets.
The seat lid has hinges that are sized to use filament as an axel.
The lever and its backer have a press fit (but glue works if it's not right on for your printer).

https://youtube.com/shorts/LeTzwMRFBIc?feature=share

Bambu Lab

Bambu P1S