Here is a fun game you can use over the summer with summer school or scout groups, or even with your own kids. Of course, it would also be great at a center for the first few weeks of school if you are thinking that far ahead.
All you need is this free download and a set of Jenga blocks. Fortunately, these are pretty easy to find at yard sales this time of year for just a few dollars (or thrift stores, of course). Just tape the sentence strips onto the blocks and have kids play as usual, with this one change. Players must finish the sentence on the block they pull before the next player can go. Kids LOVE this game!