Creativity refers to the human processes that underpin sublime forms of expression and fuel innovation. Creativity support environments (CSEs) address diverse areas, including education, science, business, programming, design, art, performance, and everyday life. An environment may consist of a desktop application, or involve specialized hardware, networked topologies, and mobile devices. CSEs may address temporal-spatial aspects of collaborative work.This workshop will gather a community of researchers developing and evaluating creativity support environments. We will share approaches, engage in dialogue, and develop best practices. The outcome will not be a single prescription, but rather a landscape of routes, an ontology of methodologies with consideration to how they map to creative activities, and an emerging consensus on the range of expectations for rigorous evaluation to shape the field of CSE research. The workshop will organize an open repository of CSE evaluation methods and test data.