Possible science project. STEM Challenge: Which paper shape is the strongest? Engineering activity for kids from Creekside Learning.
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
5 Engineering Challenges with Clothespins, Binder Clips, and Craft Sticks - Fantastic STEM challenges for kids of all ages!