math centers or Indoor recess: Lego board game! See who can get to the end and build the highest tower. :} Have them add/subtract the lego pieces!
Life Over C's: 4 Free Activities for Learning Shapes - love the spinner idea
Transportation week- sorting, Counting, and Graphing Matchbox Cars for Preschoolers.
Shape writing tray plus more 2D Shapes activities for preschool, pre-k, and kindergarten. Shape mats (legos, geoboards, etc), play dough mats, posters, sorting mats, worksheets, & MORE.