1) SENSES REVIEW: On the board, list the five senses and review them with students. What are things we hear? See? Smell? Touch? Taste? List some examples called out by students. Note that all things listed are tangible.
2) TOPIC SELECTION: Emotion, being intangible and abstract, presents wonderful opportunities as a poetic topic. No two people will describe one emotion in exactly the same way. So, either write on the board or offer up handouts listing a range of emotions (you might include Peace, Fear, Anger and Guilt) and a range of colors (be sure to include Purple, Orange and Blue, as all are particularly evocative).
3) MODEL: As a class, select an emotion and assign a color to said emotion. Then, brainstorm adjectives describing that emotion—not what it evokes in others, but what it IS as its own living entity. Focus on each of the five senses.