Thames & Kosmos Spy Labs Inc: Secret Message Tools Exchange Confidential Info w/Secret Pens | Essential Tools & Tricks of The Trade from The Detective Gear Experts for Young Investigators Medium
$8.32
Spy Labs Incorporated’s activity kits and equipment provide an engaging and interactive way for kids to learn about detective work, including forensic analysis and tracking techniques.
Includes two unique pens that allow you and your fellow agents to exchange secret, confidential messages.
The pens use a special ink that becomes invisible once dry; write a secret message with one pen and rest assured: only the other pen can be used to reveal what you wrote!
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Thames & Kosmos Spy Labs Inc: Secret Message Tools Exchange Confidential Info w/Secret Pens | Essential Tools & Tricks of The Trade from The Detective Gear Experts for Young Investigators Medium
$8.32