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Abstract-Requirements engineering is a creative process in which stakeholders and engineers work together to create ideas for new products, services and systems. Several techniques have proved to be effective for eliciting creative requirements. Yet, most of these techniques are heavy to implement and require long periods of time to be applied correctly. Few lightweight creativity techniques have been developed for use in requirements engineering. One such lightweight technique is the creativity trigger, which provides simple guidance to stakeholders and engineers to help produce creative requirements. While easy to apply, creativity triggers were derived informally from experience of practitioners and have not been validated in a systematic way. This paper reports design and preliminary validation research, that sought to provide empirical foundations for a more complete set of lightweight creativity triggers, to be used by stakeholders and engineers to quickly and simply generate new and useful requirements on products, services and systems.