We could do this with out Frida Kahlo self-portraits--make them "selfies"! Fun, contemporary back-to-school lesson! Have your students draw "selfies" and describe their summer via text message prompts. Makes for a great bulletin board display!
Math wall---"How Tall am I?" Flower Sprouts with the kids' names on the flowers. This would be great as a beginning and end of the year activity! I can just imagine how much the kids would giggle over their comparisons :-)