Ideation/Creativity

Crazy 8s

Crazy 8s is a rapid ideation exercise using time constraints and sketching. Generate eight distinct solution ideas in eight minutes. This forces quick iteration and prevents overthinking. It's popular from Google Design Sprints.

Duration
15 mins
Group Size
4-4
Category
Ideation/Creativity
Difficulty
Easy
Energy
Medium

Objectives

The goals are to generate many solution ideas quickly. Overcome creative blocks using time pressure. Explore diverse approaches rapidly. Practice visual thinking, even without artistic skill.

Outcomes

You'll get completed Crazy 8s sheets. Expect rapid idea generation and a high volume of concepts.

Step-by-Step Instructions


  1. Setup (2 minutes). Each person folds a paper into eight sections. Review the problem or design challenge. Explain: quantity over quality. Stick figures are fine. Set a timer for 8 minutes.

  2. Rapid Sketching (8 minutes). Start the timer. Sketch one idea per section. Move when the timer sounds. No erasing. No overthinking. Simple drawings work. Work silently.

  3. Sharing (5 minutes). Each person shares 1-2 favorite ideas (30 seconds each). Briefly explain the concept. No critique now. Note interesting directions. Identify ideas for development.

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Facilitator Tips

Artistic ability doesn't matter. Stick figures work. The time constraint is key to preventing overthinking. Call out the time at each minute mark to keep energy up. If anyone finishes early, suggest variations or wilder ideas. Markers are better than pencils. They discourage detail. Some will struggle with "not enough time." Reassure them that's the point. I've seen this work best after a problem is well-defined. Try combining it with Solution Sketch for deeper development. Sometimes, participants get frustrated; acknowledge that the speed is part of the process.

Pre-Work

For Facilitators

  • Review participant profiles and expectations
  • Prepare all materials and supplies
  • Test technology and room setup

For Participants

  • Complete pre-session survey
  • Review background materials
  • Prepare examples or case studies

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Materials Required


  • Paper (Letter or A4, one sheet per person)

  • Thick markers (Sharpies are great)

  • Timer with alarm

  • Problem statement (displayed clearly)

  • Example Crazy 8s sheet (optional)

  • Inspiration images (optional)

  • Dot stickers (optional, for voting)

  • Digital timer (optional, projected)

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Resources & Templates

Crazy 8s - Google Design Sprint Kit
Official Google Design Sprint methodology guide for Crazy 8s exercise.
Crazy 8s - Open Practice Library
Open source guide to the Crazy 8s exercise.
Crazy 8s Brainstorming Template - Conceptboard
Free template for running Crazy 8s brainstorming sessions.
Crazy 8s Sketching Template - Metro Retro
Interactive template for Crazy 8s sketching sessions.

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