I saw that bistable switch model before in a Veratasism video called "Why machines that bend are better." All good electrical switches have a mechanism that stores energy one way or another to make sure the contacts close firmly or open completely. There is always an energy hump as the mechanism goes from one stable state to another, which is why there is a snap action. As the contact points come together, the motion continues just a bit before it stops. This causes a wiping action that cleans the contacts so they work reliably. The handle that you touch and the inner electrical part are connected with a spring, so two bistable parts work together. That way, the handle can be at that state in between the stable points and the electrical part is fully stable.
This is how it is with a chain binder for chaining loads down to lorry beds. It's a lever and it can be quite hard to tighten the chain without using an extension, but once you're almost all the way tight, it gets easier to apply the force as it goes over-center and holds itself into position. Releasing the the binder can be done without leverage fairly easily.
It feels like a bit of a stretch, but would birds who drop things from the sky to either kill or break something fall under this line of thinking, the "mechanism/tools" is the acceleration of gravity and flight
