My only bulletin board is located inside my classroom. I decided to go with an under the sea theme for our open house/beginning of first quarter.
The smiling whale pattern I used was from a wonderful FREE template website. Just go to the website and download away. They offer a few different sizes - I went with the largest one. Cut out, add an eyeball, and you're good to go. As for the seaweed, I cut out a bunch of squiggle shapes from green paper. The fish are just foam fish another teacher offered me to add a little more to my poster.