I use a 2 gallon bucket with 2 nipples that I bought off of Amazon
It's less than $20 with shipping and works great.
http://www.amazon.com/Chicken-Waterer-Dual-Nipple-System-Birds/dp/B00EMDEOLC/ref=sr_1_64?ie=UTF8&qid=1381175000&sr=8-64&keywords=chicken+waterer