Well... Very easy if you know how to solder and know a little bit about electronics. On this instructable, I will show you how to make an emergency strobe light out of a disposable flash camera. You can use the strobe light in the forest if you get lost or to warn other people about something. Please note that I am only 15 years old and I am not good at grammar so if you find some parts of the instructable confusing, please let me know and I will try fix it. Disclaimer: This instructable involves modifying a device that operates on 300v DC, so I am NOT responsible if you injure or kill your self and/or any body else from any of your actions messing around this device. So be careful what you are doing, be safe and have fun!
http://www.instructables.com/id/Hack-a-flash-camera-into-a-emergency-strobe-light-/