Water effect

[lightbyfire]

If by any chance you have access to a digital projector and a computer that can run a looping MPEG there are several places on the internet to find a simple water scene in motion, if you add a really light diffusion (or a small rectangular box of water) in front of the lense you will get some cool diffuse water ripples without having a distracting live image. Some content sites are pretty cheap too.

So if your media center has a projector it may not be a bad idea.