|Softened Light with Paper Towel|
|Make sure paper towel doesn't touch bulb!|
The more layers of paper I add, the more the light will be softened. This will make the light a bit darker, but if you're shooting with a tripod--which you should be doing anyway--this wont be a huge problem because you will be able to shoot with slower shutter speeds therefore increasing the exposure without blurring the image.
Now while this technique is not particularly green, it will save you in a pinch. The more environmentally friendly thing to do is get an old white t-shirt that can be re-used.
Do you use something similar to soften light? Let us all know in the comments!