From the creators of the New York Times bestseller Invisible Things, these wonderfully imaginative flash cards offer countless playful ways for kids to explore and express their emotions. What Invisible Things will you discover today? These stylish feelings flash cards introduce 19 different personified emotions—plus 1 blank make-your-own card to personalize. Each durable card features a wacky illustration of an Invisible Thing on one side and a fun description on the reverse.