Okay, now you all know how often I play bingo! lol. I gather the correct term is "dobber." I did take Tripp's advice and went to a dollar store and bought a bright orange one. What it is called on the outside of the bottle is "Bingo Marker". Plain and simple!! Now, my next question is, the bottle is 2.80 oz. Will I be able to put it in my carry-on on the plane?