These boxes are perfect for holding cookies, small treats, notepads, candies, or even gift cards and money! The boxes are approximately 4-3/4" x 4-3/4" x 1" and they are compatible with both the 8x12 and 12x12 mats. All of the elements can be used separately as well. See more here: http://jamielanedesigns.blogspot.com/2016/08/farm-party.html