It's Halloween Cupcake Kit by Meri Meri

Baking has never been so spectacularly scary! Not only does this kit give you the most terrific toppers and cupcake cases, but it's presented in a box that looks like a haunted mansion too. A fabulous Halloween gift for creative kids (and adults) who love to make tasty treats.
Pack of 24 toppers in 4 designs including a friendly witch, happy skeleton and pumpkin, and a ghoulish ghost.

5.5  x 8.5 x 1.5 inch