Idea Volume Brainstorming

Choose this exercise

Purpose: Generate a high volume of diverse options on a single challenge through silent writing and structured peer feedback.

Use it when: Use during early divergent ideation when a team needs a broad variety of directions before selecting or evaluating options.

Skip it when: Skip when the group must select a final decision, prune a backlog, or resolve an urgent operational issue requiring rigorous evaluation.

Group arrangement: Single group for 4 to 6 people; subgroups of 3 to 6 people for 7 to 24 people (e.g. 7 divides into 3 and 4; 11 into 5 and 6)

Timing: UWT suggested 35 minutes based on the source's 10-minute silent write plus turn-based presentations and feedback.

Materials and tools

• Pad of 3x3 inch sticky notes per person
• Black felt-tip marker per person
• Red marker or red pen per subgroup
• Shared vertical board or wall space per subgroup
• Digital countdown timer

Before participants arrive

1. Write the target challenge question at the top of each subgroup's board or wall space.
2. Place sticky note pads and black markers at each seat.
3. Place one red marker or pen by each board.
4. Arrange chairs in clusters of 3 to 6 around work tables facing their assigned wall space.

Say this to open

Our goal today is volume. For ten minutes, work silently to write one idea per sticky note. Aim for broad variety, including wild or unexpected angles. Do not filter or criticize yet. After writing, everyone will post their notes and we will review them together.

How to run it

1. Set boundaries and rules 5 minutes

   Read the challenge prompt aloud. Agree on ground rules: hold criticism, write one idea per note in large letters, and encourage wild or unexpected angles. Remind participants that ideas do not need to be practical or polished.

2. Individual silent writing 10 minutes

   Start the 10-minute timer. Everyone writes ideas silently on sticky notes. For example, if the challenge is 'How do we encourage school kids to eat better food?', notes might range from 'Turn vegetables into dinosaur shapes' to 'Let students run a daily smoothie cart'. Participants keep writing until the timer sounds.

3. Share and mark notes 12 minutes

   Work in subgroups of 3 to 6. Each person takes up to 2 minutes to post their notes on the board and read them aloud. Subgroup members listen without interrupting or debating. If a listener wants to offer feedback, suggest an addition, or explore an idea further, they draw a red cross directly on that note. After the presenter finishes posting, the subgroup spends any remaining time in that 2-minute window giving quick additions on the marked notes.

4. Combine ideas and debrief 8 minutes

   Spend 4 minutes in subgroups pairing marked wild ideas with practical ones or grouping similar notes. Use the remaining 4 minutes for a whole-room debrief. Call on 2 or 3 volunteers to share an observation using one chosen debrief question.

Debrief questions

• Which unexpected idea became more practical or interesting after you saw it on the board?
• What clear clusters or patterns formed across your subgroup's notes?
• What ground rule or timing adjustment would improve our next idea generation round?

Finished output: A board filled with categorized sticky notes, with notes marked with red crosses indicating prioritized items for immediate combination or follow-up work.

Remote

Use a shared digital whiteboard with dedicated frames for each subgroup of 3 to 6. Run the 10-minute timer in the main room while participants create digital sticky notes. Send subgroups to breakout rooms. Participants take 2-minute turns moving notes to their subgroup canvas and reading them. Peers use a digital pen, red cross sticker, or red 'X' text box on notes they want to discuss or build on. Subgroups spend the final minutes clustering notes before returning to the main room.

Hybrid

Form fully in-person subgroups and fully remote subgroups whenever numbers allow. If mixed, pair each remote participant with an in-person partner who writes and posts their notes on the physical board. Remote participants see the board via a focused camera and verbally direct their partner to draw red crosses on specific notes.

Access and participation choices

• Participants may type, sketch, or dictate their notes to a peer instead of handwriting them.
• Anyone may decline reading notes aloud by posting them silently or asking a partner to read them without attribution.

If the session gets stuck

Participants begin debating or rejecting an idea during another person's presentation turn.

Intervene promptly. Remind the room that evaluation is paused and ask the speaker to place a red cross on the note so the idea can be adapted or combined later.

A participant stops writing after only two or three ideas during the silent period.

Offer lateral prompts aloud: imagine an impossible budget, imagine the worst possible solution, or borrow a concept from an unrelated industry like aviation or gaming.

Terms used here

• Red cross: A hand-drawn red 'X' on a sticky note signaling that a peer wants to offer feedback, add a build, or explore that idea further.
• Divergent ideation: Generating a wide variety of possible responses to a challenge before filtering or choosing any of them.