Rasmus Ottesen Stride leads a creative workshop on effectiveness and innovation. He discusses principles from IDEO like generating many ideas without judging quality, building on others' contributions, and thinking big. Participants do exercises in rapid idea generation, like drawing 25 apples by passing a pen around, to practice these principles. Rasmus then guides the group through a structured process of brainstorming problems and technologies, grouping related ideas, selecting the most promising combination, and developing it into a 30-second visualized presentation. The goal is to open up participants' thinking and explore the potential for innovative solutions.