Items with a strong scent, cotton balls
Explore the sense of smell with your preschooler or school-age child. You'll need to gather up some distinctly smelly items, such as pickle juice, cinnamon, baby powder, perfume, vanilla, ginger, cocoa powder,coffee, etc. Shake or spray a little of each on cotton balls (one cotton ball per scent). Then see if your child can guess what each cotton ball smells like.