(work on writing) This free printable tracing lines busy bag for preschoolers is a great introduction to writing. Preschoolers will have fun tracing the lines and practicing their fine motor skills.(work on writing)
DIY Math Games Ideas to Teach Your Kids in an Easy and Fun Way
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.
Fine Motor Skills Needed at School and Classroom Activities to Help