This is not all that far fetched an idea. Reading it recalled something I had seen on a daytime TV show years ago, I may have even still been in high school at the time, where the guest was a well known Martha Stewart type of her day.
She showed a video of how she watered her indoor plants in her opulent home. She had a hospital 2 quart plastic disposable enema bucket and was walking from plant to plant opening and closing the shutoff on the tubing to give each the desired amount of water. I remember thinking it was a pretty creative idea.