I wet mattress cover doubled over and hung from a rack in the garage. Two chairs behind the mattress cover with one 60w desk lamp, one 60w clip on lamp and one car inspection lamp (40 or 60w). They were there to give me the back lighting. It didn't work out that well. The desk lamp was fine, but because the other two were bulbs with no shade to direct the light towards the mattress cover not enough light hit that side to whiten it. So that was fixed in Photoshop (PSP8 to be exact).
The glass was on a set of step with two unused place mats turned upside down. They have been blurred in Photoshop (psp8 again...) to smooth out the noise and imperfections.
Water was placed into the glass, the lights turned off (leaving the lamps on) and the camera set to a ten second timer (the camera is an old point and shoot digital by the way). After I heard the beeps towards the end of the timer I thought of the fun I could be having on Supermarket Sweep and squirted in some blue food colouring from a syringe.
The steps the glass was on wasn't perfectly level which showed up after the images were seen on the computer. So I rotated the glass to hide it.