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.
We're Going on a Word Hunt (fun hide and seek game!) for sight words/vocab words. To diferentiate for multiple students use colored post it notes (each child has their own color post it with words they are working on) adaptable to Letter Hunt.
Nature inspired craft - Pine Cone Weaving inexpensive but fun. Pupils can start this activity by finding the pine cones themselves. Different weaving materials will give different results great craft activity as well as a finger strenthening activity.