Smartphone Bat Signal
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Sometimes you may turn on your phone's camera flash as a handy flashlight to illuminate the darkness, but when evil super villains threaten you, simply place this cool new Smartphone Bat Signal in front of it to summon the Batman for a rescue, maybe. This miniature 3D printed Bat Signal is designed to be held in front of the flash to shine a little Batman symbol on anything you want. It obviously won't be bright enough to reach the clouds, so having The Dark Knight actually show up will end in mixed results, but it's fun to try nonetheless.