Steps

1. Agree the challenge or problem for the ideas you want to solve
2. Write the problem on a sheet of paper or whiteboard and place it where everyone can see it
3. Give everyone a single blank sheet of A3 paper
4. Fold it in half 3 times - to make 8 equally sized panels
5. Set a phone timer for 5mins 20secs (40 seconds per panel)
6. Everyone quickly sketches 1 idea per panel, using visuals instead of words - the quality of drawing is not important
7. Everyone sticks their paper up and discuss all or some of their idea - someone should take notes