Are you looking for a novel way to use SmartBoards in your class? Why not have your students work on a puzzle? This could be a fun stations activity for younger students, a chance to practice shape recognition or even a rainy weather "in-day" lunch option.
Take a look at the JigZone. You can pick the design and number of pieces. And you can compette in teams to see who can assemble the puzzles the fastest. Viewed full-screen on a SmartBoard, it's great fun.
Here's one to try: