We did a lot of the usual things we do with math/counting manipulatives, which included a lot of word problems ("If you have 5 apples, and you eat 2, how many do you have?") for addition and subtraction.
Fine Motor Skills
Apple Seed Science
Both L and E begged me to let them plant the seeds in the yard, but since it was a windy cold day and the ground was dry and hard, I let them plant them among some damp paper towels:
Apple Print Painting
And that's the story of how I came up with a spontaneous apple mini-unit one morning last week...