Classroom organization / Transportation Display - Know each day where your students will be going how your students are getting home. Since you use clothespins it can be changed each morning and with one glance you and the students will remember.
Back to school idea - "We're looking back on summer, this is what we see!" Have students draw pictures of things they have done over summer break in sunglasses. You could also do it for things students are looking forward to this year.