first week of preschool letter finger painting- just tape letters (first week I think focusing on their name but could do this for other letters) and let them fingerpaint, remove tape and there's a letter.
Name Kits: Tools for Teaching Young Children Their Names - Fun-A-Day! Name Kits for Preschool and Kindergarten - simple but meaningful way for teaching young children about their names and other early literacy concepts
Beginning of the Year Basics! Printables for the First Few Weeks of Kindergarten