I'm a little late to the party but here is what I used.
They are old chicken layer cages with every other divider removed and pre-made rabbit cage doors from Bass. I also put 1/2" wire over the 1"x2" wire bottoms.
Even though I re-used an existing cage, building a wire cage is pretty easy to do.
I used solid bottom rabbit feeders but they would waste alot of feed with them as is. I used a piece of duct tape to narrow the opening of the feeder and it really cut down on the waste.
ETA: I finally took the time to measure them. They are 16" x 16" x 16" with a 2/12 slope for the egg tray.
I think we need to get some more pics of peoples setups and make this a sticky. about every 3 or 4 weeks we get a post like this. the chickens have there own coop pages maybe we quail raisers can get something like that?