I started my first 365 project in flickr with a 365 Days Bokeh Project. After awhile playing with Christmas lights with bokeh, I tried thinking of a new bokeh background.
I tried using plastic bottles and different reflective materials for the background until I ended up with using a very simple material found in the kitchen which gave such an amazing result. Aluminum foil.
Check out the article here: http://www.diyphotography.net/el-bokeh-wall/