Mud Kitchen Food - Munchkins and Moms Make pretend food for your kid's mud kitchen using stones. Such a brilliantly simple idea to combine with mud pies!
fairy soup - happy hooligans - outdoor sensory activities for kids. This is also a free activity you could consider mentioning to parents; a trip to the local park and then play at home. Also called a messy mixture, or "perfume making"
Preschool Construction & Sculpture Activities: Make Mud Brick Buildings
Remarkable Preschool Math Center Ideas - How Wee Learn