Was just wondering as I had misplaced (yet again) my scraper, the only suitable thing I could find was my Boots Reward Card! 
In the past (in the days when cassettes were de riguer in cars) I have used half a cassette case!?!
So, is it just me that uses random items to scrape off my windscreen?
(My neighbours can often be seen wielding a kettle of hot water
to deal with their de-icing needs!)