This "I'm done..." board is a great way to remind students of their choices once they have completed the current activity. By having this posted as a bulletin board or poster within the room, students would have a visual reminder of the acceptable options they have while awaiting transition to the next activity. This procedure would help maintain order as well as keep faster students busy.
Ideas for setting up anchor-chart friendly bulletin boards! From: Ms. Lilypad's Primary Pond (Blog)
Fall Display ~ easy to adapt for a variety of book-related features, such as recently read books, book reviews, book reports, or summaries that tell why a particular book is a "good read."