I usually don't teach summer school but like to leave a summery kind of board up for students.  This year I created some funky fish out of construction paper and old magazines.  I posted them on the board with smaller fish that listed summer concert events in the area.  I added a computer generated title to complete it.

To make the fish trace a fish shape on any colored construction paper.  Using a circle  punch and colorful pages from old magazine punch out tons of circles and glue them onto the fish as gills.