Who doesn't like to see some greenery in the middle of winter? I know I do and so do my chickens. I started a very simple barley fodder system in our spare bathroom. All you need is some small art bins from your local big box store, water and barley seed.
The bin on the left has about a cup and a half of barley seed and a couple inches of water. That is day one. All of the other bins should have holes, smaller than a barley seed, drilled in the bottom. After the first 24 hours, you do not want the barley to be sitting in water. Just make sure you have enough holes drilled to drain the bin. Mine take about a minute to drain.
These are day 6 and 7. You have to soak every bin twice a day. Since I am doing this in my spare bathtub, sometimes I just plug the drain and fill the tub up a couple inches and let them soak for 5 minutes. Or you can just pour water in each bin. It is very important to do this twice a day, once in the morning and once at night.