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Send secret messages anytime with this 50-pack of Invisible Ink Spy Pens featuring built-in UV lights. Perfect for kids, students, or anyone who loves a bit of mystery, these pens write with invisible ink that can only be revealed using the attached UV light. Ideal for use on paper, cards, and other..

Unlock endless fun and creativity with this 5-pack of Pink UV Secret Ink Spy Pens, specially designed for kids who enjoy spy games, puzzles, and imaginative play. Each pen writes in invisible ink that only becomes visible under the built-in UV LED light.Perfect for party favours, group activities, o..