I recently ordered the book Being Wendy and have been using it to plan career lessons for my 1st grade classrooms. Last year I used Career Critters but I felt like it would have been more suitable for my kindergarten students. Being Wendy is great because you can tie in some lessons on self-acceptance and diversity as well.
Book Description: Wendy lives in an odd town where everyone has to wear a box. These boxes are labeled with what each person does. The teacher wears a TEACHER box. The baker wears a BAKER box. Even the doctor wears a DOCTOR box! These boxes are worn for life and Wendy has to choose hers soon. How will she ever decide on just one box? She's interested in so many things! Wendy's moxie makes her break out of her box . . . And she sets the whole town on end when she does!
Ms. Sepp's Counselor Corner posted some great discussion questions as well as a craftivity to go along with the story.
The Corner On Character also shared some great ideas about "thinking outside the box".
If you want a lesson for older students (3-4) you could use this lesson: schoolcounseling.weebly
Being Wendy Prezi