~Plantcam

You can attach it to your planters but you actually attach it to anything that stays still but changes over time. The time lapse camera records everything in the time intervals you set. Then you can create your own fast-forward movies and post them on YouTube and become a viral hit. $79 at Signals

In the meantime, here's a video on YouTube of clouds moving across the sky with the help of Mr. Plantcam: