After this fall's set of elections, I harvested a few choice signs from median strips and vacant lots to experiment with. Some years ago, I made a chair (http://www.instructables.com/id/Cardboard-Chairs-101/). This time around, I was looking to take advantage of the translucency of the corrugated plastic, so I made a simple lamp inspired by this project by Andrew Thomson (http://www.thomsonforthewin.com/post/882287812/buckminster-for-president). His is a geodesic masterpiece -- this one is much simpler, goes together with no fasteners or glue, and uses no parts other than fixture and sign. It takes about a half hour to put together, and once you get the hang of it, endless variations are possible. I made mine for free, salvaging the electrical parts out of an old studio lamp, but even if you have to buy a fixture new, it shouldn't run you more than eight or ten bucks.
Make sure to only use CFL or LED bulbs; conventional incandescents will get hot enough to burn or melt the plastic.
You will need these materials:
Corrugated campaign sign
Light socket with cord and switch
You will need these tools:
Box cutter or X-Acto knife