Had when i worked in a preschool and kids love them! I would use colored sand instead of white salt. DIY salt tray with alphabet cards. Easy to make and kids have fun smoothing out the salt after correctly making the letter
Alphabet museum: Inspired by Montessori alphabet boxes. Imagine the buzz when your students come into the classroomroom and discover a new item in the museum, or two items that have switched places overnight . excitement in learning!