Use this tactile Human Anatomy Felt Board Science Activity for Kids (which you can make yourself!) to learn about the human body! You could use different textured papers and materials for different pieces or different systems of the body!
Toddler threading activity with giant cardboard beads. Could be a little project to have them paint the tubes, let them dry, and cut the tubes into smaller lengths (with some help). Add stickers for decoration and even more fine motor practice!