Pro tip: Use a hockey skate to scrape ice off your windshield

This doesn't appear to be the safest way to scrape the ice off your windshield, but it sure looks like it works. 

You may find yourself without a scraper but your hockey bag is still in your trunk (likely frozen). Grab a skate and get to work. 

However, there are at least two other items I would turn to first: A credit card or a CD (if you're old school like me).