A coin spun on its edge, simulated with cannon-es rigid-body physics: gravity, rolling contact and friction drive its tilt, precession and wobble as it winds down.
Note: this is a stylized/accelerated take — real Euler's Disk toys chatter for a minute or more thanks to subtle air-damping effects that are hard to reproduce in a generic solver. Here the raw cannon-es dynamics are used as-is (no artificial physics assist), so it settles in seconds rather than minutes — still the same real phenomenon, just faster.