I have made a couple of sets of these to sell in a local boutique and realized that I never did a post about them. And of course I've already made them - but I'll try and tell you how....
I bought my sheet metal from Pick Your Plum - so maybe keep your eye out to see if they run that deal again - I have a handy button on my sidebar that shows the deal of the day.... (I don't know why I can't get it to center....)
Anyways, then I got a 2x4 and had Trevor cut it for me, into chunks that were about the size of the sheet metal. Then I needed him to cut a slit into the boards. He got fancy and angled the blade on his table saw so that the cut looks like this - that way the sheet metal leans back just a little - it's perfect:
I think that these would be perfect for a photo display on a desk at work. Anyways, they weren't hard to make - go try it!