This is my answer to the traditional Montessori color boxes. I brought two foam puzzles from Wal-Mart a year ago for a $1 each. Can't beat that. Hassana's sorting seashells we collected in Charleston into small, medium, and large piles. She referred to the large ones as the Daddies, the mediums were the Mommies and of course, the babies were the little bits. I was amazed that she made that connection all by herself. Go, Sana!