With the Kosmos craft kit "The Three !!! Secret Jewelry" from the "Alles Könner Kiste" series, children aged eight and over can design individual pieces of jewelry with hidden messages. The set contains colorful beads, threads, and special accessories to encrypt secret messages in bracelets using Morse code or special reveal film. This creates fashionable accessories that also serve as a secret code between friends. Perfect for creative crafting fun that combines detective stories with stylish design.