Art for slow PCs

A few days ago, I was rendering a couple of views in Revit Architecture, and it was really slow - slow enough for the little rendering time window to leave a trail behind it if i clicked and dragged it around the rendering pane. I executed a couple of pieces of ART (Art Rendered by Trails) which I'm quite proud of, even if my smug-shit colleagues smirked behind my back:

By the time I was done rendering, I had ten works of ART. As you can see, there are limitations because of the colour and size of the window, as well as which side it gets dragged from, resulting in a darker and lighter shade. This kind of art, to my knowledge, is limited only to slow PCs, though probably is possible while any program is executing a memory intensive process.
If I can build up a small fan following, I'm ready to consider working on this full time...