In some implementations, a method includes displaying a user interface that includes an objective-effectuator and a first affordance to manipulate the objective-effectuator. In some implementations, the objective-effectuator is characterized by a set of predefined objectives and a set of visual rendering attributes. In some implementations, the method includes instantiating the objective-effectuator in an emergent content container. In some implementations, the emergent content container allows the objective-effectuator to perform actions that satisfy the set of predefined objectives. In some implementations, the method includes displaying a second affordance in association with the emergent content container. In some implementations, the second affordance controls an operation of the emergent content container.