Ideation Decks is a project that explores the development of a methodological tool for design ideation. It involves the creation and use of bespoke project-specific card based systems which help to define constrained design problems within a broader overall problem space. Use of this system is intended to support the practice of parallel design by design practitioners, and to help more effectively explore specific problems by aiding in iterative design explorations. AUTHOR KEYWORDS CreativitySupportTools,DesignMethods,DesignProcesses ACM CLASSIFICATION KEYWORDS H.5.2. Information interfaces and presentation: Prototyping.