Colouring-in is now officially an ok, sane and cool hobby for grown-ups, meaning it must be time for kids to take creativity to the next level and stay one step ahead of us oldies. Hamleys Sprayza Smelly Pens are part of an inventive range of arts and crafts products encouraging boys and girls to unleash their inner Banksy with some awesome and quirky artwork. Just blow and spray to create amazing airbrushed art. These clever pens add scents and smells to your airbrushed art. Stencils, 8 smelly pens and sprayza included.