Baker Ross Rainbow Unicorn Shape Scratch Art Fridge Magnet Craft Kits for Children to Design Decorate and Personalize (Pack of 10) Create enchanting designs on these attractive unicorn magnets! Simply scratch a pattern between the outlines to reveal rainbow colors. 5 assorted, each with a scratch tool and magnet. Attach to a fridge or any metal surface. Design size:approx. 5.12 inches.