The instruction on how to make a poor man side flash is really great!
I just made a very quick try. On the left photo you see an indirectly flashed glass and on the right photo a directly flashed glass.
I find the result convincing, especially because I 1. didn’t pay anything for it and it was 2. a very, very quick try!
(The more so as you don’t see so good at the indirectly flashed glass that I didn’t dried the glass too well at the last washing up ;-)))
This indirect flashing is similar to my entry Taking Photos from Jewelry.
Links:
At flickr: Poor Man Side Flash
Here at unikatissima: Taking Photos from Jewelry