Using minimal materials. I like the carport material (or sheet metal) just folded over for the roof. With a few changes I might start with this. I'm not sure I can embed the pics to I'll just post the link: http://slo.craigslist.org/grd/2483793952.html For instance, I might include the rafters along the top to be used as roosts. I might add some 45 degree angle supports in each of the upper corners for added strength. But it's simple, I think anyone can do it.