An experiment combining the Rapier physics engine with React Three Fiber to explore real-time physics simulation in the browser. The scene consists of dynamically spawned cups, with each cup represented as a RigidBody using two simple cylinder colliders. The simplified collision geometry is used to reduce the computational cost of simulating a large number of objects. Cups can be interacted with directly by clicking them to launch them into the air. The demo also includes controls for adjusting the maximum number of objects and spawn rate, as well as a debug mode for visualising colliders and monitoring the frame rate. The scene can be explored using the standard OrbitControls.