InspectorGordon I was just speaking to a teacher about how the IR-Pen can be a design and technology project this is exactly the evidence I need!What we need now is a graffitti painting application! Katkind You can buy gift cards that you record a message in. When you open the card the recorded message plays. Rip out the electronicsm, record a spray can in action and wire to your switch.benpaddlejones