How to make Piggy Bank Safe

Password protected Piggy Bank Safe made from Cardboard. This vault style piggy bank is a cool toy for kids easy to make at home. When the dial is on correct digit, the door opens. For all other numbers it remains locked. It can be easily modified for a 2 digit or 3 digit password. Just take a bigger box and make 2 dials for 2 digit and 3 dials for 3 digit password. Go for 4 or 5 digits and it becomes impossible to open without knowing the correct password.
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