If you've been living under a rock for the past few years, you're probably not aware that there are alternatives to purchasing ringtones for your favorite songs. Including popular websites that provide users with easy ways to clip parts of songs in order to use as tones when people call, there are multiple applications for the iPhone that allow the same thing using your iTunes library. One of the better ones among the ranks of other similar utilities, is Dring.
If you're hiking and run across a bear that might want to eat you, either give it three dozen cans of beer until it passes out (as was the case back in a USA Today article back in 2004) or feed it your iPhone. Per CIO.com, when Vermont hiker Kris Rowley was approached by a bear and it kept following her, it proved more interested in chowing down on her iPhone.