Have an afternoon of food-tasting.

Gather your family together to research at least 3-5 varieties of one type of food (i.e., fruit, vegetable, or nut). Talk about the unique qualities of the food and a little about its history (i.e., when it was discovered or what it is known for). Lead the family in a taste test of the different varieties of the food, or prepare the food several different ways and have everyone choose their favorite. For example, an apple could be prepared as apple snack wedges, applesauce, apple cider, and baked apples. You could also present similar types of vegetables, such as collard greens, spinach, kale, and mustard greens. Talk about differences in their taste. Pick fall favorites, or be adventurous and try new things.