Dinosaur cake - Maybe could use green sugar sprinkled on chocolate frosting for a similar effect. The rock candies and cookie crumbles add nice detail. Kind of like this Branche except without the dino fossil portion, just dinos.
These monster finger puppets are too adorable to be real! Make these severed fingers from a yeti, ogre, and a sea monster while teaching the kids basic crafting skills like simple sewing. Frightfully friendly for ages