STEM Activity for Kids: How to Make Straw Rockets (w/ Free Rocket Template)- Fun for a science lesson, outdoor play activity, or unit on space! Great for students in a special education classroom. Work on oral motor skills as well as sensory play.
I think you could also have multiple pipe cleaners coming from one number and students have to show multiple ways to add numbers to get to that number. Counting with pipe cleaners and beads. Great for fine motor development too.