And I thought my collection was impressive! I guess "catch and release" doesn't count?
Check out this impressive collection of cocks by an anonymous New York "collector" featured on Narratively. If you're not impressed by cock-clocks and dick-shaped salt shakers, check out the life-size, 200 lb statue of the boy with a baseball-bat boner:
Just in case you're wondering, "Phallus Palace" is also a book about female to male transexuals. . .