Finding a secure place to store your valuables can be tricky. Safety deposit boxes can be expensive, hollowing out books can be time consuming, and fake electrical outlets and air vents can lead to confusion. To ensure the safety of my rare first edition holographic Charizard Pokémon card, I dug a moat around my house and filled it with piranhas and alligators. But not everyone is willing to go to such extreme lengths. Most people choose to hide their valuables in conventional safes, but what if you want to go a step further? What if you could engineer a homemade puzzle and buzzer system to deter any would-be burglars from even looking for your safe? In a recent video, Bob from the YouTube channel I Like To Make Stuff demonstrates how to install a wall safe with an added puzzle safety feature.