Method cards, also known as ideation cards, creativity cards, or brainstorming cards, are tools used in ideation sessions to promote discussion, suggest new avenues of exploration, structure thinking, and spark ideas.

For example, if a team is working on developing a new product, they can use method cards to generate ideas on the features, design, pricing, target audience, and marketing of the product. Each card in the set contains a short text or image that prompts a new approach to the problem or stimulates thinking. The cards may be questions, analogies, patterns, or more, designed to stimulate new avenues of thought.

The team can draw one or many cards or keep drawing until they no longer need them. The cards may also function as checklists, covering all the aspects that might be considered when developing the product. The team can work through the cards to ensure they don't forget anything important, or they can prioritize the most important cards to focus on.