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.
Instead of numbers write the color word on the bottles. Sort pom-poms by color. Empty each bottle and count the pom-poms. Then record how many pom-poms were in each bottle. Add the two colors together for addition practice.
Primary level science station for magnets. "Is it magnetic?" This sorting science station is appropriate for pre-k, kindergarten, primary grades, or preschool. With younger children be careful to ensure items size isn't a choking hazard.
Phonics 1 Phonics/Alphabet Baskets Sorting Activity (from The Imagination Tree) Make baskets with objects that sound like a specific letter. Give the students a basket and let them practice their phonics skills by naming the objects.