Yup, me too. I got the chicks kinda on the spur of the moment, knowing I had to build the coop. But, hey, they're confined to a box with a light for a couple weeks, right? So when they're a week old and still surviving and growing, I start my coop. I used all 'recycled stuff - an old truck topper (5ft x 6ft) for the roof, 4 x 4's someone gave me, recycled 2x4's, my neighbor's unused 2x4" welded wire fencing and posts, screws, hinges, clasps and staples I had hanging around, etc. I think the only thing I bought were the fittings for the automatic waterer. Oh, and later, when the chicks could actually SLEEP in the coop, I bought the flashing to make the slanted 'poop slide'.
I'm very happy with my little coop, it suits my needs very well. And I built it about 15 feet outside my back door, for ease of use, and enjoyment of my chickens.
Before the coop was finished, I was taking them outside for short 'playtimes' and placed them in a chicken-wire fenced garden, 4x8ft. They loved it. I covered this with a sheet, attached to the wire by clothespins! After 2 weeks in the coop, I had the outdoor run completed. It's 6ft tall except under the foliage, there it's 4ft tall.