Several years ago a friend gave me an idea for water saving that I just finally put into practice in February. Keep a bucket in your shower to collect the water that is otherwise wasted while it is warming up. Remove it from the shower and keep it by the toilet to use for flushing. This is so amazingly simple and effective. Even though I often shower at my club rather than at home it still amounts to at least one flush saved per day and more on the weekends. Try it!