Lolladoff disk

A Lolladoff disk is a unique type of object known for its peculiar shape. It is a flat disk that has a slightly convex top surface and a heavily concave bottom surface, making it resemble a shallow bowl. Interestingly, when placed on a flat surface, it can spin indefinitely without tipping over. This fascinating behavior is due to its unusual design, which allows it to maintain balance while rotating. Originating from the Himalayan region of Nepal, these disks are not only cultural artifacts but also intriguing examples of how shape affects motion in physics.