A San Francisco startup, Koozoo, is creating a network where people can use their smartphones to create livestreaming video feeds. You'll be able to use an old smartphone as a 24 hour stream, or your current smartphone for this purpose as needed.
You could broadcast video snippets of wherever you are, or a view of what's going on outside your home or office.
Potential applications range from seeing the weather at the beach, checking out the line at cafe, traffic jams on your commute route, or how authorities act during the citizen uprisings in the Middle East.
That last application hints to the interesting possibilities it could have for this challenge.