I don't have one, I think I ran into a tight spot and deposited everything I had coins, change, everything =
I guess it wouldn't be too hard to go grab another, but I don't care.
I know a friend who does work as a speaker hands out two dollar bills during his gig. 1 dollar is too little to get people excited about( and this is partially true with 5 and even 10 bucks), 20 is where people are interested... but that is too much to give out for a speaking gig, so he uses 2 bucks, since the novelty makes them as attractive as a 20 but at 1/10th the price.