George writes –
My dad is quite inventive. He loved the Canon S2 IS camera that I had purchased for myself. So he got himself one a long time back. Of course being the rascal that he is it had to be improved. When trying to take close up macro photos the flash would burn out anything you were interested in. Here are his solutions. These do work on many cameras. He made two varieties of the CCRRFD. The first is made of bowls and the second cups. You cannot not find expensive professional products that produce results this good.
CCRRFD (Cheap creative rascals ring flash diffuser) Thanks Steve! – Link.