Not very exciting but it can lead to some very cool effects, the shots:
probably one of the easiest to set up:
Piece of white paper - I used a sheet of wrapping paper turned over,
CD or DVD turned over
Straw / biro - something to hold a drip of water
Glass of water with a tiny bit of oil in it
Just laid out the paper and put the DVD upside down on the paper, 'dripped' three drops of liquid onto the disc, set the tripod up to just higher than the table and rested the torch on it, then I moved the disc around until I got the colours / lines that I liked - Oh and turn the main room lights off.
I shot these handheld (which is why they aren't pin sharp) as I only had the one tripod, when I do it again I will use one.
This is the rough layout:
The different set-ups etc are endless so give it a go and see what you come up with.
.DAVID.(hope this is the kind of thing you were thinking of?)