Hailey got some addition flashcards for Christmas, and since the girls literally have every pony available, they made up a game where they divided up the cards and the ponies equally. They had to lay one card out and if they had the matching pony they got to put the match in front of them. If they didn't have the match, the card got passed to the next person and so on. When the first person finished their cards they have to count their matches, and whoever has the most, wins!
They made up the game together, and played it I don't know how many times.