This website has a lot of great, fun and creative ideas to help students practice place value. My favorite is the ice cream cones. Students get to build ice cream cones but matching the numbers and different ways to write the numbers.
A, Bee, C, Preschool: Building Shapes. Kindergarten readiness: Colored craft sticks are labeled with the number of sides each shape has, ie: 3 purple sticks - triangle. The children will choose a color and build the matching colored shape from the sticks.