Emergency credit card
Besides shopping, a credit card can be handy on different occasions. Its flat shape can be used to open stuck locks, for example. There is another hack for using credit cards, especially in the winter.
You can use the credit card to scrape ice off your car windshield on snowy days. If you don’t have an ice scraper or snow brush, reach into your wallet and pull out this plastic lifesaver. Plus, it won’t scratch your glass.