Salt and Pepper said it. "Pallets!" Along with steel roofing or an old truck cap and some chicken wire. Stand 'em up, nail 'em together and pop the truck cap or roof on and run some wire around for chicken run. Takes less then 30 minutes to build a coop with run. 50' of chicken or welded wire is about $35.
Depends on what you have laying around. The birds won't care... they just want protection from the elements and predators.
My first winter the girls spent in just the truck cap with plywood to block the door. The next spring I put pallets under the cap to bring it off the ground. Old trailer skirting to keep the wind out and make it look somewhat better.
Last year I framed up a 6'x6' coop wth old 2"x4" lumber from work. Girls still preferred the truck cap

They would roost and lay their eggs in there. Took weeks before I could get them to roost and lay in the new coop.
My hens are free range. There is a fence but they roam free all day and come back to coop to lay eggs and at dusk to roost. I just open the door and they decide.
If they have picked a safe place to roost it can be hard to break them of it. May have to coral them into the coop around dusk or catch them and place them there a few times before they get the idea. A 40w florecent light in the coop can help guid them to where to go.
Best waterers for duck and chickens are plastic 4 and 5 quart ice cream buckets. Simple and cost nothing. Easy to clean and fill....