I just finished surfing http://www.printactivities.com/. It has sudoku games for kids- over 6 levels! starting with super easy- and Car Trip Bingo. I love finding stuff I can tell parents about to make their lives a little easier.
Also, check out the skip counting mazes. You find your way through the maze by following the numbers counting by 1's, 5's, ect. Laminate and use with dry erase markers! These make a great exercise for fine motor control as well as spatial reasoning. I am a sucker for spatial reasoning activities seeing as I lack it completely! My DH will totally back me up on that. ;)