My littlest one Loves to sort socks. This is great for me as I can always use an extra hand when it comes to laundry. It also is good for him for a couple reasons. First, he is helping, which is something that is important to him. Second, he is doing it himself & third, he is learning to sort. He sorts the socks by who they belong to. Then he sorts through to find the mates. This requires skill as not all black socks are the same.