1 Liter Water Bottle Lights – Low Tech Solutions
This image is of a 1-liter bottle filled with water (and bleach) that is 3/4 inside and 1/4 outside of this home, which during daylight hour provides free light to the inhabitants. This is without a doubt the coolest thing I have seen so far this week. Check out the linked video that documents this incredible low-tech invention!
http://www.wimp.com/lightenup/