We've heard of vinegar before as a good alternative to Windex, but this tip uses a breakfast staple for people all over the world. What is it, you ask? Answer below the jump.
No, it's not coffee (at least, not that we know of), it's black tea! After you've had your morning cup, let any remaining tea cool. Next, fill up a spray bottle with the cold tea, and clean your windows as you would with any other cleaning product. Easy and super simple.