The Fun City Toys My Secret Unicorn Diary Set is an enchanting 200-piece journaling and activity box designed for kids ages 6 and up to write and protect their private thoughts. Featuring a magical spiral-bound unicorn notebook complete with a lock and keys, this interactive set includes a special secret invisible-ink marker pen equipped with a UV light top to reveal hidden messages, decorative stickers, and fun accessories. It offers young writers a safe, imaginative, and engaging way to express their creativity while keeping their secrets secure.