Saw this on Strobist and thought I'd just see if it worked.... http://strobist.blogspot.com/2006/10/free-and-so-easy-diy-grid-spots-for.html Well, here's the product of 10 minutes work: Here is bare 580ex light: Here is the 580ex with the Sto-Fen Omnibounce: And here's the 580ex with the ghetto grid: Yeah, I know the pictures are suckish, I just threw the camera on the tripod and fired away without even setting it up. No retouching on the image, just a resize, and I haven't tweaked the grid to try and get the best results. I also didn't change any camera or flash settings between shots. This was purely to see the effect of each modifier. My only modification over the Strobist grid is that I used 2" black gaffer tape to make a collar so that it would just slip on and off like the Sto-Fen. I thought you clowns might think it was interesting and it only cost about $.03 to make it.