Maker Lab: Ultimate Spy Vault & Code Kit | Klutz cups & mugs The cement mixer is on

The cement mixer is on the move and the jackhammer isn’t far behind

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Maker Lab: Ultimate Spy Vault & Code Kit | Klutz cups & mugs The cement mixer is onAssemble a double security lock with a combination code and key to hide your most prized possessions. Then, use the included buzzer and electronic components to build a working door alarm or pressure plate to keep your valuables safe from prying eyes. With easy to find materials from home and our step by step instructions in the book, you'll discover even more exciting spy activities, such as: Dusting for fingerprints Encrypting and decrypting codes