The small 55 gallon barrels I have are great, but they fill up very quickly even in a light rain. You would be amazed at how much water you can collect. There are many cistern options out there. They just tend to be very large and expensive. But I recently saw a display from Bushman Tanks who offer water harvesting and storage tanks suitable for the average homeowner. I thought the prices were reasonable and I love the slim line tanks that are designed to store a lot of water in a small footprint. I know what I want for Christmas next year…..
[Mr. Homegrown here–hopefully Santa will bring us a Bushman Tank too–in the meantime, see our rain barrel here.]