The water problem

A reader contacted me in regard to the post I did about using the water that came out of the tap cold when you were running it hot. She said that obvious answer was a bucket. Hmmm. Seemingly she knows many people who have one handy, and who then use the water for useful purposes, such as watering the garden, or filling up the hot water jug, and so on. Gray water is what it's called, a term I have heard before, and apparently some people even collect their bath water and re-use that. I'm not sure how I'd do that at my place, but it would interesting to try!