I also LOVE the ideas from the pp's!
Here are a few more:
Student of the Week: Superstar Smurf
Jobs: Handy Smurfs (like others listed!)
Work Board: Smarty Smurfs, or Super Smurf-y Work!
Book Center: Be a Smart Smurf and Read!
Welcome Board: Kindergarten is Just Smurfy
-------OR (teacher's name) Smurfs are in for a Super Year!
What a FUN theme!!