roly poly toy motion

I want to explore roly poly motion of the object, which is opposite of the pendulum motion. It tends to fall by gravity but it recovers its motion with damper effect and moves back and forward. Simply, it can be reserve hanging of the pendulum. Also, the motion of the roly poly is more interesting than simple pendulum, since the pendulum tends to move in 2-d direction while the roly poly moves in 3-d direction.