Here's one I know.
CHARGE YOUR IPOD WITHOUT A PC OR CHARGER
You need : Ipod to USB adapter.
A console.
Your ipod suddenly drops dead of power, don't panic!
PS3's, Wii's and Xboxes all have USB ports, if you've brought your usb cable with you, you are actually able to charge your ipod by plugging it into a current-gen console, and the best part that it doesn't forget up syncing, or break the ipod.
Have fun.