When we were at the end of the pacifier for my son:
I rock him before bed, so I sang my usual lineup and then I told him the 'Pacifier Story.' Basically, it was the story of him being born, being a baby, having no teeth, drinking from a bottle (or nursing), getting bigger, being able to sit up, getting teeth, crawling, walking, etc etc on & ON...EXCEPT I added in about him loving his pacifier, how he named it, etc. I told how his pacifier was everywhere when he was a baby- bouncy seat, swing, carseat, excersaucer, clipped to his clothes, etc and in the story as he got bigger he only had his pacifier in his crib & in the car and then he was in a big boy bed & his pacifier was just for the bed (can you tell I go on & on?), etc.
Then I said, now his pacifier is gone, but he's in your heart & I told him to "close your eyes (well I sang it) and remember his pacifier and feel the love for his pacifier," etc (yeah, I'm corny too!)....I must've yammered on & on enough to get him to sleep and that was that.
Bye bye pacifier !!
I told his 'Pacifier Story' night after night (nap time too I would guess) until really it faded out of our routine...