Looking for a watering bulb. I have seen them referenced in books and used in a bonsai video. Used to think they were pointless, uncontrolled, held too little water. Now as I am watering more inside I think I could appreciate the petite spray they could afford. Initial searches bring up the watering tips that screw onto plastic bottles. I have one and foresee the cited problems of the bottle always cracking. Unfortunately when I bought it I did not realize the only thing that uses soda bottle threading is soda bottles. Any links or ideas appreciated.