Here are some Halloween birthday cake ideas for kids:
Ghost cake - A simple and cute cake shaped like a ghost, with white frosting and black licorice for the eyes and mouth.
Jack-o'-lantern cake - A round or square cake decorated to look like a carved pumpkin, with orange frosting and black icing for the eyes, nose, and mouth.
Monster cake - A fun and colorful cake with layers of different colored cake, decorated with candy eyes, licorice hair, and frosting horns.
Spider cake - A cake decorated with black frosting and spiderwebs, and topped with candy spiders.
Haunted house cake - A cake shaped like a haunted house, with black frosting and candy decorations like bats, ghosts, and tombstones.
Witch hat cake - A cake shaped like a witch hat, with black frosting and orange or green accents.
Mummy cake - A cake decorated with white frosting bandages, and candy eyes peeking out.
Skeleton cake - A cake decorated with white frosting bones and candy skulls.
Bat cake - A cake shaped like a bat, with black frosting and candy eyes.
Candy corn cake - A cake with layers of yellow, orange, and white cake, decorated with frosting and candy corn.