I don't know if anyone has outted this to the list... Paolo Vidal's water bottle collection in Italy:
http://www.bidonscollection.it
Mostly modern, but a few from the 1960s & 70s. But what a fun display! And it looks like he has bottles to trade.
And check his friends links - more bottles, cardboard cyclists, autographs, team postcards, etc.
Aldo Ross
Middletown, Ohio