I made a 5 gallon chicken feeder and a 5 gallon water bucket for the chicken coop. These come in handy when leaving for a few days or so you don't have to fill a smaller feed and water bucket everyday.
You start with a 5 gallon food grade bucket available at any hardware store. I used a jigsaw to cut out the holes in the side. If you have a 2-3 inch hole cutter for your drill, I would use that. You can find the metal pan at any agriculture store for about $5.
I screwed the metal pan to the 5 gallon bucket. Run your screws through the metal pan into the 5 gallon bucket. I screwed wine corks into the screws inside the bucket to hold it in place. I am sure there is a better way to do it, but this worked well for me.
For the waterer, start with a food grade 5 gallon bucket. You will need to pick up some horizontally mounted chicken nipples to make this waterer. You can find them here. Follow the instructions that come with them. You basically drill a hole smaller than the widest part of the nipple you screw in. You then screw the nipple into the bucket until it is tight and upright. The best part is the chickens can't get the water dirty!