No, but have been looking into them. I need to save every drop of rain I can. Our lake is less than 50% capacity. It is 62 miles long and over 200’ deep at places when full. We will need a major rain event to refill it from its current level.
We bought some regular trash cans once to use in a pinch, and lots of 5 gallon buckets, which are a nice size to use. When they are full, we can put the lid on and stack them up, and put out others to catch the new rainfall.
Our plan is to set up a swimming pool and collect runoff from the roof. Use mosquito dunks and cover the pool. We should be able to adjust the filter to back hose setting and pump water to the garden with some adjustments.
We’d really like a cistern, but that’s pretty expensive, so the pool is a good step for now. It’ll hold 4000 gallons.