Here’s a great way to utilize a plastic bottle, water, and film to bring natural light to your home/office without using ANY electricity. This method basically uses film and water to disperse the sun light into indoors. It will only work indoors but still a great way to save energy, especially each of these so-called lamps produce about 55-watts of power, more than your regular bulbs.
Here’s video on the HOWTO:
video://www.youtube.com/watch?v=_zMAWztZ6TI