Try This: Plastic Jug Light Shade

Create a translucent window shade out of plastic jugs.

3. Rough up the surface of the plastic triangles with sandpaper so they diffuse the light almost like rice paper. Using a small hole-punch, pierce the plastic triangle at the top and center bottom. Small holes of less than 1/8 inch work best. You can find smaller diameter hole-punches at an office or stationary store.
Photo By Susan Wasinger