Flip a water bottle off your fingertips and land it standing up. Hold to lower your hand and swing the bottle back, then let go to flick it into a spin. The water sloshes around inside, so it only stays up when it lands flat with the water at the bottom.

Every landing scores a point for each flip the bottle made, so a triple is worth three. One miss ends the run, and holding too long drops the bottle.

Copy it to change the physics, the art, or the rules.