Numbers for skip counting and multiplication Here's a set of number organizers that show multiples of each number inside the number outline. These might be interesting pieces in student notebooks.

Have Students make their own anchor charts for geometry to show angles with popsicle sticks. All sorts of anchor charts: Teaching Angles using popsicle sticks & more more

19 Ridiculously Simple DIYs Every Elementary School Teacher Should Know

Human Place Value - love the ball as the decimal point. Try using this idea with converting in metric system. Have students wear numbers and another student moving decimal point.