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.
30 Materials Activities to Promote Fine Motor Skills. This website gives many ideas for teaching small children fine motor skills. This is great for preschool and even students with disabilities who need extra practice with things.