This would be a fun idea for kids and a great use for all those toilet paper rolls I can't throw away! Chopsticks or tweezers for fine motor skills, used to pick up and drop pom-poms into color matched toilet paper rolls.
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!