hacks

Convert an analog wall clock to binary

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Envelope PDF template: Cut out and fold an envelope from a letter-sized sheet of paper, which will hold a quarter-fold greeting card.

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Hacking Elevators 101: Put the elevator into “Express” mode by pressing your floor and the “Door Close” button at the same time.

Hacking Elevators 101: Put the elevator into “Express” mode by pressing your floor and the “Door Close” button at the same time.

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