Waterer
I ran into a stump last winter when my store bought galvanized waterer was rendered garbage. I went to the store with limited funds and came up with a very simple waterer. I purchased a standard 5-gallon all purpose plastic bucket for about $3.00. I took it home a cut a 2 inch slot from the top of the bucket to about chicken neck level (6 or 7 inches from the bottom). It's a bucket with a slot in it. I filled the bucket to give to my girls until I was able to purchase another. Long story short, they've been using the plastic bucket waterer for about 18 months now, and I've received no complaints. I clean it daily by dumping a small amount of clean fresh water and scrubing with an SOS pad. Every 3 months, I flush the waterer and clean it with bleach. So far, no diseases or sanitation problems have come from the bucket. They're very easy to de-ice (thump and dump) and do not bend beyond repair when banging them against a tree for serious ice problems.
Feeder
After having success with my plastic bucket waterer, I decided to try the same feat with a feeder. I bought a 3 gallon plastic bucket this time with a 16 inch plastic planter base. I also purchased 3, 1/4" thick, 1" long bolts with washers and wing nuts for all three. I cut 4, 1/2" slots at the base of the bucket, around the edges, and drilled holes connecting the bucket to the base. I added the three bolts, washers, and wing nuts to put them all together. It works on the same concept as the store bought gravity feeders, but I was successful in spending only $8.00. I undo the wing nuts and thoroughly clean each feeder every 3 months.
Hope it helps!