The Louis lampshade, by Matthias Decker from Fachhochschule Nordwestschweiz, is a flexible LED lighting system suited to home or office. A pulley allows conversion from a wide, umbrella-like configuration to a concentrated spotlight arrangement.
this one sounds even easier to make: bubble snakes = easy quick craft. Cut the bottom off water bottle. Put old sock over bottom and duct tape. Add food coloring for fun. Dip end in dish soap mixed with a little water