Algodoo

Most people probably don't know that this type of snap-action device is used in so many mechanical and electrical products. It's used in temperature controls, tactile feedback for some keyboards, electrical switches, and even in hand-held "clickers" for alerting and training animals.

As an idea for this scene, maybe you can make a finished product with it such as an electrical switch, or just a simple clicker. The user presses and releases a button to make it change states.

Thanks for the suggestion. I make no promises.

very nice mechanism

are these things like those random rubber toys that you turn inside out and they eventually spring back when you put them on the ground?

Yes.