Online crowdsourcing systems present new opportunities for open and participatory design by enabling distributed and collaborative thinking. The Creativity Kernel is a web-based, open platform that allows designers to crowdsource needfinding, identify opportunities, and collaboratively generate and evaluate ideas around a given topic amongst a range of stakeholders. The members of the Creativity Kernel network—individuals, teams or organizations—can create new projects or contribute to existing ones. The Creativity Kernel guides the users through a sequence of three method modules—Likes and Wishes, Opportunity Synthesis and Cheatstorming—consisting of quick and intuitive interactive challenges. The collective output of these three modules is a set of collaboratively generated ideas that can be used to address problems large and small. At the DIS 2019 conference, we hope to demonstrate our system to actively engage attendees in collaborative ideation on topics related to the conference theme of intersections and borders.