Crazy 8s

A fast sketching exercise to generate solution ideas

discovery-loop-outcomes loop position

No. People



30 min




Product Manager/Owner, Tech Lead, Design Lead

What is it?

Crazy 8’s is a core Design Sprint method. It is a fast sketching exercise that challenges people to sketch eight distinct ideas in eight minutes. The goal is to push beyond your first idea, frequently the least innovative, and to generate a wide variety of solutions to your challenge.

Here’s a quick overview video:

Why use it?

This practice is a great way to ensure a product team is taking the time to prioritize user needs and generate enough solutions to needs to broaden the potential for finding the best idea. Often times, a team generates a solution and begins development right away without considering whether a solution is a good one. But “good” is a relative term, so ideally teams should be generating a myriad of product solutions in order to compare and contrast and allow the best option to emerge.


  1. Give each participant a single sheet of printer paper and a sharpie
  2. Have participants fold their paper into eight sections (it should look like the paper in the header image for this post)
  3. Set the timer for eight minutes
  4. Each team member sketches one idea in each rectangle
  5. When the timer goes off, put your pens down
  6. Have team members spend 2 min presenting their 8 ideas to everyone

Follow-on Activities

After the team presents ideas, you can run a dot-voting exercise to vote on which ideas and idea components the team likes the most. Afterwards, you can consolidate the ideas into a single idea to flesh out into a testable prototype.

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