You can carry a credit-card toolkit (figure A) anywhere. It weighs only about 3 ounces and can fit in the credit-card slot of most wallets. It contains eight common tools that can help you out of a jam: a serrated knife, a screwdriver, a bottle opener, an awl, a toothpick, tweezers, a compass and a magnifying glass. The kit's dimensions are 2" by 3" by 1/8".
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