Below are other resources that you can acquire to help you with your search for stories, parables or poems.
Stories Trainers Tell: 55 Ready-to-Use Stories to Make Training Stick
Mary B. Wacker & Lori L. Silverman
Chicken Soup for the Soul at Work
Jack Canfield, Mark Victor Hansen, Maida Rogerson, Martin Rutte & Tim Clauss
The Magic of Metaphor: 77 Stories for Teachers, Trainers & Thinkers
Nick Owen
Tales for Trainers: Using Stories and Metaphors to Facilitate Learning
Margaret Parkin