We've told you before how to rent chooks complete with a coop, but if you need to build a home for your feathered friends, it turns out you can pretty much get all the components at IKEA.
At IKEA Hacker, Aaron Bell details the construction of a chicken coop using a bunk bed, storage unit and a bottle rack. It's probably not an option for the casual DIY-er, but it's a neat demonstration of imaginative reuse in action. (IKEA doesn't seem to sell the specific bunk bed Aaron used any more, but the plan could easily be adapted with any slat-based bed.)
Ikea home for chicks [IKEA Hacker]