Rainbocorns Adopt-A-Corn Surprise Egg Toy Bundle Rainbocorns Mystery Plush - Rainbocorns Adopt a Corn Mystery Set with Plushie, Stickers, More | Rainbocorns Surprise Egg Toy for Kids. This Rainbocorns Adopt-a-Corn Surprise Egg contains one mystery Rainbocorms plushie animal inside your surprise egg. Sure to be a hit with kids, this Rainbocorns blind box is great to include in an Easter basket or part of a birthday gift. Enjoy the mystery of opening your Rainbocorns Adopt-a-Corn Surprise Egg to see which cute Rainbocorns plush figure you received. Officially licensed Rainbocorns Adopt-a-Corn Surprise Egg for kids also includes animal stickers and a Beach Kids bookmark.