I remember hearing, someplace, sometime, of a place in Europe, I believe, where the machine just dispensed soda, no cup, bottle, or can. There was a "community" glass by it and the customers would actually use it for a drink, then wash it out and leave it for the next customer. Sounds unbelievable. Wish could remember where and when.
And drinks on ice? IMHO...the best bars have the beers on ice. Phooey on the refridgerators that NEVER get 'em cold enough. Ah.....a bottle of beer out of the ice chest on a hot, hot, HOT afternoon. Doesn't even matter what kind of beer or how old....beer on ice on a hot day is heaven!
Pull tabs: The easiest way to dispose of the detatcheable ones was to just drop 'em in the can. But there was a side effect -- I've heard "urban myth?" that people sometime swallowed 'em. OUCH!!!